A 2D compressible Euler solver written entirely from scratch in C. This engine models transient supersonic fluid flow through a Converging-Diverging (CD) nozzle using the Finite Volume Method (FVM). It is designed to run natively on desktop or compile to WebAssembly for zero-friction browser execution.
- Mathematics: Solves the compressible Euler equations using a Rusanov (Local Lax-Friedrichs) flux scheme. Uses ghost cells for reflective solid boundary conditions.
- Meshing: Features a custom Delaunay triangulator and a half-edge data structure for fast adjacency queries.
- Memory: Built on a custom arena allocator. In the browser build, this contiguous memory block is shared directly with JavaScript via
Float32Arrayviews for blazingly fast, zero-copy rendering at 60+ FPS.
The project has two distinct build targets: a native desktop application (using Raylib for visualization) and a headless WebAssembly engine (using Emscripten).
Compiles the engine and renders it using Raylib.
Dependencies: gcc, make, and Raylib (included in vendor/).
make
./out/main
Compiles the headless physics engine to WASM and generates the JavaScript glue code. The output is routed to the docs/ folder to be served statically by GitHub Pages.
Dependencies: Emscripten (emcc).
make browser
To run locally, spin up a web server in the root directory (e.g., python3 -m http.server 8000) and navigate to /docs.
Built by Márcio, a Chemical Engineer with a PhD in process simulation and optimization. This project serves as a foundational proof-of-concept for the high-performance, engineering calculations powering the diagramming tools at Voima.