https://github.com/hawkgs/wasm-fluid

🌊 Browser-based fluid simulation (Müller et al SPH method)
https://github.com/hawkgs/wasm-fluid

canvas cfd fluid-dynamics fluid-simulation golang javascript simluation webassembly

Last synced: 5 months ago
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🌊 Browser-based fluid simulation (Müller et al SPH method)

• Host: GitHub
• URL: https://github.com/hawkgs/wasm-fluid
• Owner: hawkgs
• License: mit
• Created: 2024-04-03T09:35:48.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2024-05-05T08:07:49.000Z (about 2 years ago)
• Last Synced: 2025-03-21T10:02:14.162Z (about 1 year ago)
• Topics: canvas, cfd, fluid-dynamics, fluid-simulation, golang, javascript, simluation, webassembly
• Language: Go
• Homepage:
• Size: 15.6 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# wasm-fluid

_**Under development**_

🌊 Browser-based fluid simulation (Müller et al SPH method).

Calculations: WebAssembly (Go); Visualization: HTML Canvas

![Demo](./assets/demo.gif)

Müller et al SPH method: https://matthias-research.github.io/pages/publications/sca03.pdf

### Issues

As stated above, the simulation is based on smoothed-particle hydrodynamics method by M. Müller and others. It incorporates density, pressure and viscosity calculations, plus external forces – gravity in our case. Surface tension is not implemented. Since the paper focuses on 3D SPH, the used smoothing kernels for this implementation – or more precisely, their normalization scaling factors – are adapted for 2D. Anyway, there are still things that require attention/fixes, some of which are probably a matter of proper parameter tuning:

- Achieve stability

- ~~The fluid acts as a highly viscous liquid.~~

- ~~Particles that go outside of the particle stack and then get reintroduced at the edge of the smoothing radus of another particle, produce a critically low density. When the forces are divided by the density, the product acceleration has a very large magnitude which ejects the particle from the stack. There is a temporary fix for this.~~

- ~~There is an instability at the edge of the fluid sometimes. This is, again, most likely a result of low densities producing high acceleration (but not enough to eject the particle out of the fluid).~~