CS171 Final Project: Liquid Simulation by SPH Method

PDF report: report/report.pdf

report/particles-44294.mp4 is a video of the simulation. The simulation result is stored in n-44294_f-600.data

A Linux release is in release/{main_cpu,main_cuda,main_surface}.

Build

set CUDA dependency path to your own path in CMakeLists.txt (Line 52-54).

set(libcudacxx_DIR /opt/cuda/targets/x86_64-linux/lib/cmake/libcudacxx)
set(CUB_DIR /opt/cuda/targets/x86_64-linux/lib/cmake/cub/)
set(Thrust_DIR /opt/cuda/targets/x86_64-linux/lib/cmake/thrust)

git clone https://github.com/sakria9/cs171-project.git
cd cs171-project
cmake -S . -B build
cd build
make -j8

View pre-simulation results

21607 particles, 300 frames, MAX_PRESSURE_ITERATIONS = 100:

git lfs checkout data/n-21607_f-300.data # 75 MB
./build/main_cpu data/n-21607_f-300.data # run program
# press space to simulate

44294 particles, 600 frames, MAX_PRESSURE_ITERATIONS = 100:

git lfs checkout data/n-44294_f-600.data # 305 MB
./build/main_cpu data/n-44294_f-600.data # run program
# press space to simulate

Simulation

Note that we set MAX_PRESSURE_ITERATIONS to a relatively small value to run faster. To get more accurate result, set MAX_PRESSURE_ITERATIONS 100.

./build/main_cuda

Save simulation result to file

# simulate 100 frames and save result to output_file
./build/main_cuda output_file 100
# to view the result
./build/main_cuda output_file

Reproduce pre-simulation data

n-44294_f-600.data:

• Edit pcisph/pcisph.h Line 5 to const int MAX_PRESSURE_ITERATIONS = 100;
• Edit src/main.cpp Line 95 to particle_system = drop_3d_Large();
• Recompile
• Run ./build/main_cuda output_file 600

n-21607_f-300.data:

• Edit pcisph/pcisph.h Line 5 to const int MAX_PRESSURE_ITERATIONS = 100;
• Edit src/main.cpp Line 95 to particle_system = drop_left_3d_Large();
• Recompile
• Run ./build/main_cuda output_file 300

Surface extraction

Run

./build/main_surface data/surface-example

Thrid Party Library

glad, glfw, glm, stb, thrust