airpocket-soundman/airpocket-simulation-studio
Developer toolsBrowser-based multiphysics simulation studio / 構造・熱・流体・音響解析アプリ（開発中）
Overview
Load a STEP or STL model, pick regions directly on the 3D view, and run structural, thermal, fluid, vibration and acoustic simulations locally. Meshing and solving run in your browser (Web Worker + WASM). Your model data is not uploaded. - https://airpocket-soundman.github.io/airpocket-simulation-studio/?lang=en - https://airpocket-soundman.github.io/airpocket-simulation-studio/development.html?lang=en Each tile is a result produced by the app itself from its built-in demo models. Solver engines: the in-house Tet4 solvers (CPU, with experimental WebGPU plus CPU correction for structure) and an independent engine for structure, so results can be cross-checked. This is an engineering aid, not a certified solver. Read the limits before relying on a number. - Stokes flow only: Re ≤ 0.1, external box domains, up to 2,000 nodes / 8,000 tetrahedra. No inertia or turbulence. - STL meshing: one closed, outward-facing, convex shell, up to 2,000 triangles. No automatic repair.
README
airpocket Simulation Studio
A browser-based CAE workbench. Load a STEP or STL model, pick regions directly on the 3D view, and run structural, thermal, fluid, vibration and acoustic simulations locally. Meshing and solving run in your browser (Web Worker + WASM). Your model data is not uploaded.
- Open the app:
- Development board:
What it can do
Each tile is a result produced by the app itself from its built-in demo models.
| Structural — linear elasticity, prescribed displacement, thermal stress, J2 plasticity, Neo-Hookean rubber | Thermal — steady and transient conduction, convection, radiation, contact resistance |
| Natural vibration — mode shapes and frequencies | Acoustics — frequency-domain and transient, exterior radiation, directivity, WAV output |
| Fluid — Stokes flow around a sphere (half section) | Channel flow — developed laminar speed profile |
Animated versions: structural (GIF) · modal (GIF) · transient acoustics (GIF) · Stokes flow (GIF) · WebM clips are in docs/media.
Feature overview
| Area | Support |
|---|---|
| Geometry | STEP and built-in shapes; closed single convex STL volume meshes. Select whole CAD faces, planar rectangles, cylindrical patches, or triangles |
| Structure | Linear elasticity, prescribed displacement, thermal stress, small-strain J2 plasticity, compressible Neo-Hookean, S–N fatigue screening, brittle-fracture screening |
| Thermal | Steady/transient conduction, convection, radiation, planar contact resistance |
| Fluid | Steady 3D low-Reynolds Stokes flow (P1 and Taylor–Hood P2/P1), internal fluid extraction from CAD, developed laminar channel flow |
| Vibration / acoustics | Frequency-domain and transient acoustics, natural modes, one-way vibration-to-sound coupling, exterior radiation and directivity |
| Meshing | Local and adaptive refinement with convergence diagnostics |
| Results | Section views, probes, case comparison, PNG/animation export |
| Materials | Built-in library including 91 published polymer records, with temperature/rate/direction dependence and orthotropic data |
| Automation | MCP server and a dedicated skill so an AI agent can drive the same operations |
| Printing | 3MF / G-code import and layer inspection (experimental) |
Solver engines: the in-house Tet4 solvers (CPU, with experimental WebGPU plus CPU correction for structure) and an independent MFEM 4.10 WASM engine for structure, so results can be cross-checked.
Honest limits
This is an engineering aid, not a certified solver. Read the limits before relying on a number.
- Stokes flow only: Re ≤ 0.1, external box domains, up to 2,000 nodes / 8,000 tetrahedra. No inertia or turbulence.
- STL meshing: one closed, outward-facing, convex shell, up to 2,000 triangles. No automatic repair.
- J2 plasticity runs on the CPU engine only. It cannot be combined with MFEM, WebGPU, adaptation, modal analysis or thermal stress.
- Fatigue needs measured fully reversed S–N data with provenance; material names alone never produce a life value.
- Not supported yet: general Navier–Stokes and turbulence, crack growth, mechanical contact, nearly incompressible rubber, general curved or two-way acoustic coupling.
Details: Analysis guide · Plasticity · Fatigue · Stokes flow · STL meshing
Quick start
Use the hosted app, or run it locally (Node.js 24):
npm ci
npm run build
npm run dev # http://127.0.0.1:5173
npm test # full test suite
Pushes to main are built by GitHub Actions, verified, and published to GitHub Pages.
Driving it from an AI agent
npm run mcp starts a local stdio MCP server (inspect, edit, preflight, solve and export saved projects) and can connect to an open browser tab through a local bridge. The skill lives in skills/airpocket-studio. See MCP and skill.
Documentation
| Topic | Pages |
|---|---|
| Start here | Features · Analysis guide · Solvers · Materials |
| Structure | Plasticity · Rubber · Fatigue · Brittle fracture · Orthotropic materials |
| Fluid | Stokes flow · Exterior fluid domains · Internal fluid from CAD |
| Vibration and acoustics | Acoustics · Transient · Exterior radiation · Modal · Vibration to sound |
| Geometry and meshing | STL meshing · Adaptive meshing · CAD update · Planar / cylindrical / oblique regions |
| Results | Sections and probes · Image and animation export |
| Engines | WebGPU · MFEM engine · Browser runtime |
| Printing | 3MF / G-code import · Printed parts |
| Project | Architecture · Roadmap · Testing · Review notes |
Progress and status
Official progress is tracked in src/progress.json and shown on the development board. Status is updated at milestones; a task counts as released only when a publication record exists. Notes on the board are stored locally in each browser and can be exported as JSON.
License and third-party software
See LICENSE and THIRD_PARTY.md (includes the optional SU2 notice). The source repository is public at the owner’s request.
Media in docs/media were captured from the app running in Chrome; media-manifest.json lists how each file was made. Rubber and fatigue demos are not shown because their results are not visually distinct yet.
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Install
npx skillfish add airpocket-soundman/airpocket-simulation-studio