Fluid Simulation

An implementation of the Smoothed Particle Hydronamics (SPH) Algorithm as described by Ihmsen et al and Müller et al. [1, 3].

Static rigidbody-fluid interactions are modeled from the methodology of Akinci et al. [2]

Running

A sandbox and visual demo executable is available in the releases tab.

Sandbox Controls

Key	Function	Key	Function
Q	Add Fluid	E	Add Boundary
1	Switch to Velocity	Z	Switch to Polygon Boundary
2	Switch to Density	X	Switch to Box Boundary
3	Switch to Pressure	C	Switch to Circle Boundary

Getting Started

Prerequisites

Before building this repository, make sure to have the following installed or available for best performance.

• CMake
• oneTBB
• OpenMP

Building

To build, download the repository and run either

cmake --build build --target FluidSimulation

cmake --build build --target sandbox

cmake --build build --target demo

to get the library, sandbox, or demo binaries respectively.

Usage

To import and use this project for yourself add the following to your CMakeList.txt file.

include(FetchContent)
FetchContent_Declare(FluidSimulation
    GIT_REPOSITORY https://github.com/fl1ghtly/fluid-sim.git
    GIT_TAG 1.1.0
    GIT_SHALLOW ON
    EXCLUDE_FROM_ALL
)
FetchContent_MakeAvailable(FluidSimulation)

target_link_libraries(YOUR_TARGET PRIVATE
    FluidSimulation
)

References

[1] Ihmsen, M., Orthmann, J., Solenthaler, B., Kolb, A., & Teschner, M. (2014). SPH fluids in computer graphics. https://doi.org/10.2312/egst.20141034

[2] Akinci, N., Ihmsen, M., Akinci, G., Solenthaler, B., & Teschner, M. (2012). Versatile rigid-fluid coupling for incompressible SPH. ACM Transactions on Graphics (TOG), 31(4), 1-8. https://dl.acm.org/doi/10.1145/2185520.2185558

[3] Müller, M., Charypar, D., & Gross, M. (2003). Particle-based fluid simulation for interactive applications. In Proceedings of the 2003 ACM SIGGRAPH/Eurographics symposium on Computer animation (pp. 154-159). https://dl.acm.org/doi/10.5555/846276.846298