SPlisHSPlasH is an open-source library for the physically-based simulation of fluids.

Finite volume solver for incompressible multiphase flows with surface tension. Foaming flows in complex geometries.

An adaptive and distributed-memory parallel implementation of the immersed boundary (IB) method

Curated list of some open source codes employing lattice Boltzmann methods

Library for performing multiphase simulations (based on the Shan-Chen model) in complicated geometries (i.e. porous media 3D images)

Exascale multiphase flow simulation

An open-source implementation of Quadrature-Based Moment Methods

Curated list of some open-source codes for turbulent flow simulations, including turbulent multiphase, turbulent reacting flows, turbulent convection and turbulent atmospheric physics.

SedFoam solver for OpenFoam toolbox

Object-oriented multi-mesh version of the classic reacting turbulent multiphase flow solver

What happens within your mug when you stir your coffee? In this OpenFOAM case we get to see this process unfold, courtesy of Computation Fluid Dynamics (CFD).

TRUST is a thermohydraulic software package for CFD simulations. It was originally designed for incompressible single-phase and Low Mach Number flows, but now also allows simulating real compressible multi-phase flows. TRUST is also being progressively ported to support GPU acceleration (NVidia/AMD). This software is OpenSource (BSD license).

ListLBM is a sparse lattice Boltzmann solver for multiphase flow in porous media

Parallel, highly efficient code (CPU and GPU) for DEM and CFD-DEM simulations.

Unstructured 2D multiphase solver with immersed boundary methods.

2D Cartesian Quadtree Adaptive Mesh Refinement (AMR) for multiphase Five Equations Model

Fluid-particle coupling for multiphase flow based on PhasicFlow and OpenFOAM

APECSS is a software toolbox to compute pressure-driven bubble dynamics and the resulting acoustic emissions.

Lattice Boltzmann method implemented in julia

High-order multiphase/multi-physics flow solver