multiphase_fluid_sim

A multiphase fluid simulation with parallel Schwarz domain decomposition with coarse correction for my parallel systems (CSC 548) project at North Carolina State University, Spring 2025.

Building

To build this project, run:

make -B all

To build this in debug mode, run:

make -B alld

NOTE: Please don't forget the -B flag, otherwise make gives an error.

NOTE 2: As of now, only the debug configuration generates the visualization csv files. Visualization generation is disabled in the normal configuration for timing measurement.

Running

An example command to run a fluid sim:

./fluidsim -prefix <result file prefix> -grid-extents 2.0 -grid-subdiv 128 -parallel-count 4 -steps 100 -num_particles 0

This performs the fluid simulation on a grid spanning from 0.0 to 2.0 both in x and y directions, subdivided into 128 elements and split into 4 * 4 parallel domains, run for 100 timesteps.

Visualization

You can visualize the results using the fluid_visualizer.py python script. You need numpy, pandas and matplotlib to run the visualizer. Once these are installed, you can run this as

./python3 fluid_visualizer.py <fluid grid file>.csv <None>/<particle file>.csv