flow2d-rs

Computational fluid dynamics library written in Rust

https://github.com/1n0r1/flow2d-rs/assets/80285371/36516766-5e4f-436e-8b6b-90dad9e28668

Backward facing step

Cylinder cross flow

Lid-driven cavity

Features

• 2D viscous incompressible Newtonian fluid flow
• Solve Navier-Stokes equations using Euler's Method on staggered grid
• Solve Poisson equation with Successive Over-relaxation method
• Calculate and visualize pressure, speed and stream function
• Different types of boundary conditions:
  • Moving no-slip boundary condition
  • Free slip boundary condition
  • Inflow and outflow condition
• Planned features:
  • Contour plot for stream function
  • Free boundary value simulation
  • HDF5 data export
  • Use other method to solve Poisson equation (possibly Multigrid)
  • Optimize to run on GPU
  • Energy/Heat flow simulation
  • Extension to 3D
• The theory and algorithm can be found in Numerical simulation in fluid dynamics: a practical introduction[1]

Quick start

  git clone https://github.com/1n0r1/flow2d-rs.git
  cd flow2d-rs
  cargo run --example gui

Refer to ./src/presets.rs for setting up other simulations.

Dependencies

• Iced - for GUI

• plotters - for exporting images

References

[1] Michael Griebel, Thomas Dornseifer, and Tilman Neunhoeffer. 1998. Numerical simulation in fluid dynamics: a practical introduction. SIAM