https://github.com/severindenisenko/riemann-problem-solver

https://github.com/severindenisenko/riemann-problem-solver

numerical-methods riemann-solvers termodinamycs

Last synced: 4 months ago
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• Host: GitHub
• URL: https://github.com/severindenisenko/riemann-problem-solver
• Owner: SeverinDenisenko
• License: mit
• Created: 2024-10-13T18:02:55.000Z (7 months ago)
• Default Branch: master
• Last Pushed: 2024-12-04T10:15:44.000Z (6 months ago)
• Last Synced: 2024-12-04T11:24:47.632Z (6 months ago)
• Topics: numerical-methods, riemann-solvers, termodinamycs
• Language: C++
• Homepage:
• Size: 188 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Riemann problem solver

## Solver API

You create solver:

```c++

gas_discontinuity discontinuity {

  .left  = gas_state { .density = 1.0, .velocity = 0.0, .pressure = 3.0 },

  .right = gas_state { .density = 1.0, .velocity = 0.0, .pressure = 1.0 },

  .gamma = gamma

};

solver solver(discontinuity);

```

Then you can recive function, representing solution:

```c++

auto solution = solver.solve();

gas_state state = solution(t, x);

out << x << " " << state.density << " " << state.velocity << " " << state.pressure << std::endl;

```

## This project uses

* C++23

* Meson build system for C++

* Matplotlib for plotting results

## Solutions

![first](test_results/first.png "First test")

![second](test_results/second.png "Second test")

![third](test_results/third.png "Third test")

![sod](test_results/sod.png "Sod test")