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Hypnos

DOI

Hypnos is a parametric geometry engine to create meshes for structures involved in the analysis of breeder blankets. Code blocks and paths are relative to the root directory.

Dependencies

  • Coreform cubit (2024.3+), along with a working license
  • Python 3 (3.10+)
  • The numpy python library: pip install numpy

This code should be run with Coreform Cubit 2024.3+. The DAGMC workflow will not work in previous versions. The cubit python library must be accessible by python. On linux, export PYTHONPATH=$PYTHONPATH:/path-to-cubit/bin

Installation

Install Hypnos using pip (in hypnos/, the root directory) pip install . If using as a developer, install as an editable pip install --editable .

Docs

View the documentation here.

You can also build the documentation via sphinx.

pip install sphinx
sphinx-build -M html docs/source docs/build

You will then be able to access the documentation by opening docs/build/html/index.html in your preferred browser. Please ensure you don't have an older version of sphinx-build in your path. You can do this by running:

which sphinx-build

Usage

Hypnos uses json files to describe parameters of a component. Components are represented by json objects "{ }", using the "class" key to select a specific component type. Json files containing a json object describing a component (ex. hcpb_pin.json) can be used where such a json object is expected by using a string with the file name (ex. {"class": "blanket" ... "components" : ["hpcb_pin.json"]})

Examples are given in sample json files

To use hypnos, run main.py, passing the name of the json file to a -f flag (default: examples/sample_pin.json): python main.py -f examples/sample_pin.json

The following flags are also available:

  • -h: Print available flags for use
  • -c: Name of config file to use (optional)
  • -o: Name of geometry file to export including path (default: geometry)
  • -d: Destination to create output file(s) (default: ./)
  • -i: Name of class to print default template for. Leaving empty prints the available templates.
  • -g : Names of formats to export geometry to (defaults to cubit if neither geometry nor mesh options provided anywhere)
  • -m : Names of formats to export mesh to (optional)

The names given to flags -f, -o, and -d will be preferred over their equivalent options in the config file (file, root name, destination)

Citing

Please cite the following paper if using this code.

Humphrey L, Brooks H, Mungale S, Davis A and Foster D (2026) Accelerating the engineering design of breeder blankets with parametric optimisation and sequential learning. Front. Nucl. Eng. 4:1694684. doi: 10.3389/fnuen.2025.1694684

Users are suggested to cite the below work(s) if using parts of this code based off of them.

The HCPB geometry parametrised in this code was based off of a design for the DEMO reactor from the following paper: Zhou, G.; Hernández, F.A.; Pereslavtsev, P.; Kiss, B.; Retheesh, A.; Maqueda, L.; Park, J.H. The European DEMO Helium Cooled Pebble Bed Breeding Blanket: Design Status at the Conclusion of the Pre-Concept Design Phase. Energies 2023, 16, 5377. https://doi.org/10.3390/en16145377

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parametric geometry engine for breeder blanket design

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GitHub - aurora-multiphysics/hypnos: parametric geometry engine for breeder blanket design · GitHub
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Hypnos

DOI

Hypnos is a parametric geometry engine to create meshes for structures involved in the analysis of breeder blankets. Code blocks and paths are relative to the root directory.

Dependencies

  • Coreform cubit (2024.3+), along with a working license
  • Python 3 (3.10+)
  • The numpy python library: pip install numpy

This code should be run with Coreform Cubit 2024.3+. The DAGMC workflow will not work in previous versions. The cubit python library must be accessible by python. On linux, export PYTHONPATH=$PYTHONPATH:/path-to-cubit/bin

Installation

Install Hypnos using pip (in hypnos/, the root directory) pip install . If using as a developer, install as an editable pip install --editable .

Docs

View the documentation here.

You can also build the documentation via sphinx.

pip install sphinx
sphinx-build -M html docs/source docs/build

You will then be able to access the documentation by opening docs/build/html/index.html in your preferred browser. Please ensure you don't have an older version of sphinx-build in your path. You can do this by running:

which sphinx-build

Usage

Hypnos uses json files to describe parameters of a component. Components are represented by json objects "{ }", using the "class" key to select a specific component type. Json files containing a json object describing a component (ex. hcpb_pin.json) can be used where such a json object is expected by using a string with the file name (ex. {"class": "blanket" ... "components" : ["hpcb_pin.json"]})

Examples are given in sample json files

To use hypnos, run main.py, passing the name of the json file to a -f flag (default: examples/sample_pin.json): python main.py -f examples/sample_pin.json

The following flags are also available:

  • -h: Print available flags for use
  • -c: Name of config file to use (optional)
  • -o: Name of geometry file to export including path (default: geometry)
  • -d: Destination to create output file(s) (default: ./)
  • -i: Name of class to print default template for. Leaving empty prints the available templates.
  • -g : Names of formats to export geometry to (defaults to cubit if neither geometry nor mesh options provided anywhere)
  • -m : Names of formats to export mesh to (optional)

The names given to flags -f, -o, and -d will be preferred over their equivalent options in the config file (file, root name, destination)

Citing

Please cite the following paper if using this code.

Humphrey L, Brooks H, Mungale S, Davis A and Foster D (2026) Accelerating the engineering design of breeder blankets with parametric optimisation and sequential learning. Front. Nucl. Eng. 4:1694684. doi: 10.3389/fnuen.2025.1694684

Users are suggested to cite the below work(s) if using parts of this code based off of them.

The HCPB geometry parametrised in this code was based off of a design for the DEMO reactor from the following paper: Zhou, G.; Hernández, F.A.; Pereslavtsev, P.; Kiss, B.; Retheesh, A.; Maqueda, L.; Park, J.H. The European DEMO Helium Cooled Pebble Bed Breeding Blanket: Design Status at the Conclusion of the Pre-Concept Design Phase. Energies 2023, 16, 5377. https://doi.org/10.3390/en16145377

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parametric geometry engine for breeder blanket design

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Force GitHub README to respect dark mode (function() { var style = document.createElement('style'); style.textContent = ' .markdown-body { color-scheme: dark light; } .markdown-body pre { background: #161b22 !important; } .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; } .markdown-body table th, .markdown-body table td { border-color: #30363d !important; } .markdown-body img { background: #0d1117; } .markdown-body blockquote { border-left-color: #8b949e; } .markdown-body hr { border-color: #30363d; } '; document.head.appendChild(style); })(); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' GitHub - aurora-multiphysics/hypnos: parametric geometry engine for breeder blanket design · GitHub
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Hypnos

DOI

Hypnos is a parametric geometry engine to create meshes for structures involved in the analysis of breeder blankets. Code blocks and paths are relative to the root directory.

Dependencies

  • Coreform cubit (2024.3+), along with a working license
  • Python 3 (3.10+)
  • The numpy python library: pip install numpy

This code should be run with Coreform Cubit 2024.3+. The DAGMC workflow will not work in previous versions. The cubit python library must be accessible by python. On linux, export PYTHONPATH=$PYTHONPATH:/path-to-cubit/bin

Installation

Install Hypnos using pip (in hypnos/, the root directory) pip install . If using as a developer, install as an editable pip install --editable .

Docs

View the documentation here.

You can also build the documentation via sphinx.

pip install sphinx
sphinx-build -M html docs/source docs/build

You will then be able to access the documentation by opening docs/build/html/index.html in your preferred browser. Please ensure you don't have an older version of sphinx-build in your path. You can do this by running:

which sphinx-build

Usage

Hypnos uses json files to describe parameters of a component. Components are represented by json objects "{ }", using the "class" key to select a specific component type. Json files containing a json object describing a component (ex. hcpb_pin.json) can be used where such a json object is expected by using a string with the file name (ex. {"class": "blanket" ... "components" : ["hpcb_pin.json"]})

Examples are given in sample json files

To use hypnos, run main.py, passing the name of the json file to a -f flag (default: examples/sample_pin.json): python main.py -f examples/sample_pin.json

The following flags are also available:

  • -h: Print available flags for use
  • -c: Name of config file to use (optional)
  • -o: Name of geometry file to export including path (default: geometry)
  • -d: Destination to create output file(s) (default: ./)
  • -i: Name of class to print default template for. Leaving empty prints the available templates.
  • -g : Names of formats to export geometry to (defaults to cubit if neither geometry nor mesh options provided anywhere)
  • -m : Names of formats to export mesh to (optional)

The names given to flags -f, -o, and -d will be preferred over their equivalent options in the config file (file, root name, destination)

Citing

Please cite the following paper if using this code.

Humphrey L, Brooks H, Mungale S, Davis A and Foster D (2026) Accelerating the engineering design of breeder blankets with parametric optimisation and sequential learning. Front. Nucl. Eng. 4:1694684. doi: 10.3389/fnuen.2025.1694684

Users are suggested to cite the below work(s) if using parts of this code based off of them.

The HCPB geometry parametrised in this code was based off of a design for the DEMO reactor from the following paper: Zhou, G.; Hernández, F.A.; Pereslavtsev, P.; Kiss, B.; Retheesh, A.; Maqueda, L.; Park, J.H. The European DEMO Helium Cooled Pebble Bed Breeding Blanket: Design Status at the Conclusion of the Pre-Concept Design Phase. Energies 2023, 16, 5377. https://doi.org/10.3390/en16145377

About

parametric geometry engine for breeder blanket design

Resources

Stars

7 stars

Watchers

2 watching

Forks

Releases

Packages

Used by

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Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Highlight search terms from Google/DuckDuckGo/Bing referrer (function() { var ref = document.referrer; var terms = []; if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) { var url = new URL(ref); var q = url.searchParams.get('q') || url.searchParams.get('p'); if (q) { terms = q.split(/\s+/).filter(function(t) { return t.length > 2; }); } } if (terms.length === 0) return; var style = document.createElement('style'); style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }'; document.head.appendChild(style); function highlight(node) { if (node.nodeType === 3) { // text node var text = node.textContent; var found = false; terms.forEach(function(term) { var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi'); if (regex.test(text)) { found = true; var frag = document.createDocumentFragment(); var parts = text.split(regex); parts.forEach(function(part, i) { if (i % 2 === 0) { frag.appendChild(document.createTextNode(part)); } else { var span = document.createElement('span'); span.className = 'userscript-highlight'; span.textContent = part; frag.appendChild(span); } }); node.parentNode.replaceChild(frag, node); } }); } else if (node.nodeType === 1 && node.childNodes) { // element var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT']; if (!skipTags.includes(node.tagName)) { Array.from(node.childNodes).forEach(highlight); } } } highlight(document.body); // Re-highlight on dynamic content var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1 || node.nodeType === 3) highlight(node); }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' GitHub - aurora-multiphysics/hypnos: parametric geometry engine for breeder blanket design · GitHub
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Hypnos

DOI

Hypnos is a parametric geometry engine to create meshes for structures involved in the analysis of breeder blankets. Code blocks and paths are relative to the root directory.

Dependencies

  • Coreform cubit (2024.3+), along with a working license
  • Python 3 (3.10+)
  • The numpy python library: pip install numpy

This code should be run with Coreform Cubit 2024.3+. The DAGMC workflow will not work in previous versions. The cubit python library must be accessible by python. On linux, export PYTHONPATH=$PYTHONPATH:/path-to-cubit/bin

Installation

Install Hypnos using pip (in hypnos/, the root directory) pip install . If using as a developer, install as an editable pip install --editable .

Docs

View the documentation here.

You can also build the documentation via sphinx.

pip install sphinx
sphinx-build -M html docs/source docs/build

You will then be able to access the documentation by opening docs/build/html/index.html in your preferred browser. Please ensure you don't have an older version of sphinx-build in your path. You can do this by running:

which sphinx-build

Usage

Hypnos uses json files to describe parameters of a component. Components are represented by json objects "{ }", using the "class" key to select a specific component type. Json files containing a json object describing a component (ex. hcpb_pin.json) can be used where such a json object is expected by using a string with the file name (ex. {"class": "blanket" ... "components" : ["hpcb_pin.json"]})

Examples are given in sample json files

To use hypnos, run main.py, passing the name of the json file to a -f flag (default: examples/sample_pin.json): python main.py -f examples/sample_pin.json

The following flags are also available:

  • -h: Print available flags for use
  • -c: Name of config file to use (optional)
  • -o: Name of geometry file to export including path (default: geometry)
  • -d: Destination to create output file(s) (default: ./)
  • -i: Name of class to print default template for. Leaving empty prints the available templates.
  • -g : Names of formats to export geometry to (defaults to cubit if neither geometry nor mesh options provided anywhere)
  • -m : Names of formats to export mesh to (optional)

The names given to flags -f, -o, and -d will be preferred over their equivalent options in the config file (file, root name, destination)

Citing

Please cite the following paper if using this code.

Humphrey L, Brooks H, Mungale S, Davis A and Foster D (2026) Accelerating the engineering design of breeder blankets with parametric optimisation and sequential learning. Front. Nucl. Eng. 4:1694684. doi: 10.3389/fnuen.2025.1694684

Users are suggested to cite the below work(s) if using parts of this code based off of them.

The HCPB geometry parametrised in this code was based off of a design for the DEMO reactor from the following paper: Zhou, G.; Hernández, F.A.; Pereslavtsev, P.; Kiss, B.; Retheesh, A.; Maqueda, L.; Park, J.H. The European DEMO Helium Cooled Pebble Bed Breeding Blanket: Design Status at the Conclusion of the Pre-Concept Design Phase. Energies 2023, 16, 5377. https://doi.org/10.3390/en16145377

About

parametric geometry engine for breeder blanket design

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ' GitHub - aurora-multiphysics/hypnos: parametric geometry engine for breeder blanket design · GitHub
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Hypnos

DOI

Hypnos is a parametric geometry engine to create meshes for structures involved in the analysis of breeder blankets. Code blocks and paths are relative to the root directory.

Dependencies

  • Coreform cubit (2024.3+), along with a working license
  • Python 3 (3.10+)
  • The numpy python library: pip install numpy

This code should be run with Coreform Cubit 2024.3+. The DAGMC workflow will not work in previous versions. The cubit python library must be accessible by python. On linux, export PYTHONPATH=$PYTHONPATH:/path-to-cubit/bin

Installation

Install Hypnos using pip (in hypnos/, the root directory) pip install . If using as a developer, install as an editable pip install --editable .

Docs

View the documentation here.

You can also build the documentation via sphinx.

pip install sphinx
sphinx-build -M html docs/source docs/build

You will then be able to access the documentation by opening docs/build/html/index.html in your preferred browser. Please ensure you don't have an older version of sphinx-build in your path. You can do this by running:

which sphinx-build

Usage

Hypnos uses json files to describe parameters of a component. Components are represented by json objects "{ }", using the "class" key to select a specific component type. Json files containing a json object describing a component (ex. hcpb_pin.json) can be used where such a json object is expected by using a string with the file name (ex. {"class": "blanket" ... "components" : ["hpcb_pin.json"]})

Examples are given in sample json files

To use hypnos, run main.py, passing the name of the json file to a -f flag (default: examples/sample_pin.json): python main.py -f examples/sample_pin.json

The following flags are also available:

  • -h: Print available flags for use
  • -c: Name of config file to use (optional)
  • -o: Name of geometry file to export including path (default: geometry)
  • -d: Destination to create output file(s) (default: ./)
  • -i: Name of class to print default template for. Leaving empty prints the available templates.
  • -g : Names of formats to export geometry to (defaults to cubit if neither geometry nor mesh options provided anywhere)
  • -m : Names of formats to export mesh to (optional)

The names given to flags -f, -o, and -d will be preferred over their equivalent options in the config file (file, root name, destination)

Citing

Please cite the following paper if using this code.

Humphrey L, Brooks H, Mungale S, Davis A and Foster D (2026) Accelerating the engineering design of breeder blankets with parametric optimisation and sequential learning. Front. Nucl. Eng. 4:1694684. doi: 10.3389/fnuen.2025.1694684

Users are suggested to cite the below work(s) if using parts of this code based off of them.

The HCPB geometry parametrised in this code was based off of a design for the DEMO reactor from the following paper: Zhou, G.; Hernández, F.A.; Pereslavtsev, P.; Kiss, B.; Retheesh, A.; Maqueda, L.; Park, J.H. The European DEMO Helium Cooled Pebble Bed Breeding Blanket: Design Status at the Conclusion of the Pre-Concept Design Phase. Energies 2023, 16, 5377. https://doi.org/10.3390/en16145377

About

parametric geometry engine for breeder blanket design

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' GitHub - aurora-multiphysics/hypnos: parametric geometry engine for breeder blanket design · GitHub
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Hypnos

DOI

Hypnos is a parametric geometry engine to create meshes for structures involved in the analysis of breeder blankets. Code blocks and paths are relative to the root directory.

Dependencies

  • Coreform cubit (2024.3+), along with a working license
  • Python 3 (3.10+)
  • The numpy python library: pip install numpy

This code should be run with Coreform Cubit 2024.3+. The DAGMC workflow will not work in previous versions. The cubit python library must be accessible by python. On linux, export PYTHONPATH=$PYTHONPATH:/path-to-cubit/bin

Installation

Install Hypnos using pip (in hypnos/, the root directory) pip install . If using as a developer, install as an editable pip install --editable .

Docs

View the documentation here.

You can also build the documentation via sphinx.

pip install sphinx
sphinx-build -M html docs/source docs/build

You will then be able to access the documentation by opening docs/build/html/index.html in your preferred browser. Please ensure you don't have an older version of sphinx-build in your path. You can do this by running:

which sphinx-build

Usage

Hypnos uses json files to describe parameters of a component. Components are represented by json objects "{ }", using the "class" key to select a specific component type. Json files containing a json object describing a component (ex. hcpb_pin.json) can be used where such a json object is expected by using a string with the file name (ex. {"class": "blanket" ... "components" : ["hpcb_pin.json"]})

Examples are given in sample json files

To use hypnos, run main.py, passing the name of the json file to a -f flag (default: examples/sample_pin.json): python main.py -f examples/sample_pin.json

The following flags are also available:

  • -h: Print available flags for use
  • -c: Name of config file to use (optional)
  • -o: Name of geometry file to export including path (default: geometry)
  • -d: Destination to create output file(s) (default: ./)
  • -i: Name of class to print default template for. Leaving empty prints the available templates.
  • -g : Names of formats to export geometry to (defaults to cubit if neither geometry nor mesh options provided anywhere)
  • -m : Names of formats to export mesh to (optional)

The names given to flags -f, -o, and -d will be preferred over their equivalent options in the config file (file, root name, destination)

Citing

Please cite the following paper if using this code.

Humphrey L, Brooks H, Mungale S, Davis A and Foster D (2026) Accelerating the engineering design of breeder blankets with parametric optimisation and sequential learning. Front. Nucl. Eng. 4:1694684. doi: 10.3389/fnuen.2025.1694684

Users are suggested to cite the below work(s) if using parts of this code based off of them.

The HCPB geometry parametrised in this code was based off of a design for the DEMO reactor from the following paper: Zhou, G.; Hernández, F.A.; Pereslavtsev, P.; Kiss, B.; Retheesh, A.; Maqueda, L.; Park, J.H. The European DEMO Helium Cooled Pebble Bed Breeding Blanket: Design Status at the Conclusion of the Pre-Concept Design Phase. Energies 2023, 16, 5377. https://doi.org/10.3390/en16145377

About

parametric geometry engine for breeder blanket design

Resources

Stars

7 stars

Watchers

2 watching

Forks

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Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' GitHub - aurora-multiphysics/hypnos: parametric geometry engine for breeder blanket design · GitHub
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Hypnos

DOI

Hypnos is a parametric geometry engine to create meshes for structures involved in the analysis of breeder blankets. Code blocks and paths are relative to the root directory.

Dependencies

  • Coreform cubit (2024.3+), along with a working license
  • Python 3 (3.10+)
  • The numpy python library: pip install numpy

This code should be run with Coreform Cubit 2024.3+. The DAGMC workflow will not work in previous versions. The cubit python library must be accessible by python. On linux, export PYTHONPATH=$PYTHONPATH:/path-to-cubit/bin

Installation

Install Hypnos using pip (in hypnos/, the root directory) pip install . If using as a developer, install as an editable pip install --editable .

Docs

View the documentation here.

You can also build the documentation via sphinx.

pip install sphinx
sphinx-build -M html docs/source docs/build

You will then be able to access the documentation by opening docs/build/html/index.html in your preferred browser. Please ensure you don't have an older version of sphinx-build in your path. You can do this by running:

which sphinx-build

Usage

Hypnos uses json files to describe parameters of a component. Components are represented by json objects "{ }", using the "class" key to select a specific component type. Json files containing a json object describing a component (ex. hcpb_pin.json) can be used where such a json object is expected by using a string with the file name (ex. {"class": "blanket" ... "components" : ["hpcb_pin.json"]})

Examples are given in sample json files

To use hypnos, run main.py, passing the name of the json file to a -f flag (default: examples/sample_pin.json): python main.py -f examples/sample_pin.json

The following flags are also available:

  • -h: Print available flags for use
  • -c: Name of config file to use (optional)
  • -o: Name of geometry file to export including path (default: geometry)
  • -d: Destination to create output file(s) (default: ./)
  • -i: Name of class to print default template for. Leaving empty prints the available templates.
  • -g : Names of formats to export geometry to (defaults to cubit if neither geometry nor mesh options provided anywhere)
  • -m : Names of formats to export mesh to (optional)

The names given to flags -f, -o, and -d will be preferred over their equivalent options in the config file (file, root name, destination)

Citing

Please cite the following paper if using this code.

Humphrey L, Brooks H, Mungale S, Davis A and Foster D (2026) Accelerating the engineering design of breeder blankets with parametric optimisation and sequential learning. Front. Nucl. Eng. 4:1694684. doi: 10.3389/fnuen.2025.1694684

Users are suggested to cite the below work(s) if using parts of this code based off of them.

The HCPB geometry parametrised in this code was based off of a design for the DEMO reactor from the following paper: Zhou, G.; Hernández, F.A.; Pereslavtsev, P.; Kiss, B.; Retheesh, A.; Maqueda, L.; Park, J.H. The European DEMO Helium Cooled Pebble Bed Breeding Blanket: Design Status at the Conclusion of the Pre-Concept Design Phase. Energies 2023, 16, 5377. https://doi.org/10.3390/en16145377

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parametric geometry engine for breeder blanket design

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Universal Dark Mode - works on any site (function() { var enabled = true; function applyDarkMode() { if (!enabled) return; // Create style element if it doesn't exist var style = document.getElementById('universal-dark-mode-style'); if (!style) { style = document.createElement('style'); style.id = 'universal-dark-mode-style'; document.head.appendChild(style); } // Dark mode CSS - inverts colors but preserves images/video style.textContent = ' /* Invert everything except media */ html { filter: invert(1) hue-rotate(180deg) !important; background: #1a1a2e !important; } /* Restore images, videos, iframes, canvas */ img, video, iframe, canvas, svg, picture, [style*="background-image"] { filter: invert(1) hue-rotate(180deg) !important; } /* Preserve specific elements that should not be inverted */ .no-dark-mode, .no-dark-mode *, [data-theme="light"], [data-theme="light"], .ace_editor, .ace_editor *, .CodeMirror, .CodeMirror *, .monaco-editor, .monaco-editor *, .markdown-body pre, .markdown-body pre *, .highlight, .highlight *, pre code, pre code * { filter: none !important; } /* Fix common UI elements */ .modal, .popup, .dropdown-menu, .tooltip, .popover { filter: invert(1) hue-rotate(180deg) !important; background: #2d2d44 !important; border-color: #444 !important; } /* Scrollbars */ ::-webkit-scrollbar { background: #1a1a2e !important; } ::-webkit-scrollbar-thumb { background: #444 !important; } ::-webkit-scrollbar-thumb:hover { background: #555 !important; } /* Selection */ ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; } ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; } '; } function removeDarkMode() { var style = document.getElementById('universal-dark-mode-style'); if (style) style.remove(); } // Toggle with Alt+Shift+D document.addEventListener('keydown', function(e) { if (e.altKey && e.shiftKey && e.key === 'D') { e.preventDefault(); enabled = !enabled; if (enabled) { applyDarkMode(); console.log('[Universal Dark Mode] Enabled'); } else { removeDarkMode(); console.log('[Universal Dark Mode] Disabled'); } } }); // Apply on load applyDarkMode(); // Re-apply on dynamic content var observer = new MutationObserver(function(mutations) { if (enabled && !document.getElementById('universal-dark-mode-style')) { applyDarkMode(); } }); observer.observe(document.head, { childList: true }); console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle'); })(); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })(); GitHub - aurora-multiphysics/hypnos: parametric geometry engine for breeder blanket design · GitHub
Skip to content

Repository files navigation

Hypnos

DOI

Hypnos is a parametric geometry engine to create meshes for structures involved in the analysis of breeder blankets. Code blocks and paths are relative to the root directory.

Dependencies

  • Coreform cubit (2024.3+), along with a working license
  • Python 3 (3.10+)
  • The numpy python library: pip install numpy

This code should be run with Coreform Cubit 2024.3+. The DAGMC workflow will not work in previous versions. The cubit python library must be accessible by python. On linux, export PYTHONPATH=$PYTHONPATH:/path-to-cubit/bin

Installation

Install Hypnos using pip (in hypnos/, the root directory) pip install . If using as a developer, install as an editable pip install --editable .

Docs

View the documentation here.

You can also build the documentation via sphinx.

pip install sphinx
sphinx-build -M html docs/source docs/build

You will then be able to access the documentation by opening docs/build/html/index.html in your preferred browser. Please ensure you don't have an older version of sphinx-build in your path. You can do this by running:

which sphinx-build

Usage

Hypnos uses json files to describe parameters of a component. Components are represented by json objects "{ }", using the "class" key to select a specific component type. Json files containing a json object describing a component (ex. hcpb_pin.json) can be used where such a json object is expected by using a string with the file name (ex. {"class": "blanket" ... "components" : ["hpcb_pin.json"]})

Examples are given in sample json files

To use hypnos, run main.py, passing the name of the json file to a -f flag (default: examples/sample_pin.json): python main.py -f examples/sample_pin.json

The following flags are also available:

  • -h: Print available flags for use
  • -c: Name of config file to use (optional)
  • -o: Name of geometry file to export including path (default: geometry)
  • -d: Destination to create output file(s) (default: ./)
  • -i: Name of class to print default template for. Leaving empty prints the available templates.
  • -g : Names of formats to export geometry to (defaults to cubit if neither geometry nor mesh options provided anywhere)
  • -m : Names of formats to export mesh to (optional)

The names given to flags -f, -o, and -d will be preferred over their equivalent options in the config file (file, root name, destination)

Citing

Please cite the following paper if using this code.

Humphrey L, Brooks H, Mungale S, Davis A and Foster D (2026) Accelerating the engineering design of breeder blankets with parametric optimisation and sequential learning. Front. Nucl. Eng. 4:1694684. doi: 10.3389/fnuen.2025.1694684

Users are suggested to cite the below work(s) if using parts of this code based off of them.

The HCPB geometry parametrised in this code was based off of a design for the DEMO reactor from the following paper: Zhou, G.; Hernández, F.A.; Pereslavtsev, P.; Kiss, B.; Retheesh, A.; Maqueda, L.; Park, J.H. The European DEMO Helium Cooled Pebble Bed Breeding Blanket: Design Status at the Conclusion of the Pre-Concept Design Phase. Energies 2023, 16, 5377. https://doi.org/10.3390/en16145377

About

parametric geometry engine for breeder blanket design

Resources

Stars

7 stars

Watchers

2 watching

Forks

Releases

Packages

Used by

Contributors

Languages