50 m weather simulation?

[bassyboi]

Hey!
Amazing work on FluidX3D - the performance you’re achieving with LBM on GPUs is incredible. I’ve been following the project and I’m really excited about a potential application I’d love to explore.
I’m working on high-resolution atmospheric modeling for the Darling Downs region in Australia (think 50m resolution weather forecasting), and I believe FluidX3D could be revolutionary for this. Current operational weather models run at 1.5-12km resolution, but there’s huge demand for farm-scale weather prediction that can capture local terrain effects, convective initiation, and micro-scale precipitation patterns.
What makes this particularly interesting is that LBM seems perfect for atmospheric multiphase flows - especially precipitation modeling. The natural handling of liquid-vapor interfaces, droplet formation, and coalescence without complex interface tracking is exactly what’s needed for realistic rain/cloud physics. At 50m resolution with a good GPU setup (RTX 3090 with 24GB VRAM), we could potentially simulate atmospheric processes that no current weather model can capture.
I’m thinking about extending FluidX3D with:
• Additional distribution functions for water vapor and temperature
• Atmospheric thermodynamics (buoyancy, condensation/evaporation)
• Terrain-following boundary conditions
• Integration with meteorological data sources
The computational efficiency of your LBM implementation could make real-time atmospheric LES feasible for the first time. Have you considered atmospheric applications, or would you be interested in collaborating on extending the framework for weather modeling? I’d be happy to contribute back any atmospheric physics extensions to the community.
Would love to hear your thoughts - this could open up a whole new application domain for FluidX3D!​​​​​​​​​​​​​​​​

[ProjectPhysX]

Hi @bassyboi,

this sounds like an amazing project! Weather modeling is a bit outside of my knowledge range and I don't know how much I can contribute, besides the technical implementation side - you are the expert here.
Feel free to use/modify FluidX3D for your endeavors and share your fork on GitHub.

Kind regards,
Moritz