CFDSolver

Computational Fluid Dynamics Solver

This is a code for solving partial differential equations of the form resembling Navier-Stokes equations.

Most of the details of the numerical calculations in this solver are presented in our paper:
Computers & Fluids, Volume 244, 15 August 2022, 105570

If you would like to use the code, you can follow these steps:

1. Clone the GitHub repository to your local computer:
   git clone --depth=1 https://github.com/heySourabh/CFDSolver.git
2. Download OpenJDK20 (or latest JDK) for your operating system (From Oracle or any other vendors).
3. (Optional but helpful) Install IntelliJ IDEA: The "Community Edition" is free and open-source.
4. Open the project in IntelliJ IDEA (all necessary dependencies will be automatically downloaded during the first run using maven)
5. Right-click and Run the test problems named test/main/Solver**.java
6. Duplicate the Solver in test/main/ & modify the code as needed for your application.
7. To add new physics, have a look at src/main/physics/goveqn/GoverningEquations.java.

If some step is missing, or for collaboration, please contact me.

Have a look at the Wiki Page for further details.

Developer:

Sourabh Bhat (heySourabh@gmail.com)

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Some results:

Fighter aircraft in wind-tunnel (without propulsion) at supersonic speed (Mach 2). Solved using three-dimensional unstructured mesh generated using gmsh.

Converged to 10^-3 residual in 1 min, 35 sec with second-order spatial accuracy (with ~80,000 tetrahedral cells) on Dell Precision 5570 laptop.

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Supersonic flow at Mach 2 over diamond-shaped airfoil, with mesh adaptation (using MMG)

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Grain-Growth in Metal Solidification (Fan-Chen Model):

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Dam break with an obstacle:

Test case reference: https://doi.org/10.1016/j.jcp.2004.12.007 Geometry reference: https://www.spheric-sph.org/tests/test-02

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Non-axisymmetric bubble rise problem:

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Sloshing:

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Dam break problem:

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Drop splash problem:

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Karman Vortex Shedding:

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Rayleigh-Taylor Instability: