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Rarefied Gas Dynamics - Software Hub

The scientific community for rarefied gas dynamics develops a diverse ecosystem of software tool to simulate, analyze and predict gas and plasma processes.
readme.md

Welcome to RGD-Software !

Rarefied gas dynamics

Argon gas flowing over a flat plate at angle of attack

Rarefied gas dynamics studies gas and plasma flows with low densities where the mean free path is significant compared to the flow characteristic spatial dimension, making the use of kinetic equations necessary and surface interactions crucial. The central characteristic number relevant to these processes is the Knudsen number

$$Kn = \frac{\lambda}{D},$$

a ratio of the mean free path of the particles $\lambda$ to a characteristic spatial scale $D$, which defines flow regimes from continuum flow to free molecule flow, where molecular behavior dominates.

Very often this research activity leads to scientific software to simulate, analyze, predict and/or optimize scenarios involving rarefied gas dynamics. This GitHub organization tries to collect and promote software repositories related to RGD.

Rarefied Gas Dynamics Codes

Continuum methods (Euler, Navier-Stokes)

Multi-dimensional solvers

0-D, 1-D solvers

Reaction rates, relaxation times

Thermodynamical data

Transport coefficients

Equilibrium compositions

Moment methods

Direct Simulation Monte Carlo (DSMC), Particle-in-Cell (PIC)

Large-scale codes

Smaller-scale/research codes

Discrete-velocity and semi-Lagrangian codes

Spectral methods

RGD Symposium

The community of rarefied gas dynamics gathers at the International Symposium on Rarefied Gas Dynamics - a biennial academic conference. These symposia are a forum for the presentation of recent advances in the field of rarefied gas dynamics. Research presented encompasses applications of space, materials, and propulsion, as well as the basic physics of molecular interactions, gas surface interactions, kinetic theory, astronomical observations, gas transport, multi-phase flows, combustion, non-equilibrium hypersonic gas dynamics, and plasma processing. The first symposium was held in 1958 in Nice, France. Since that time, the symposia have been organized in various countries in North America, Europe, Asia, and Australia.

The Symposium invites scientists from several disciplines to discuss basic science and technological applications in the following areas:

  • Boltzmann and related equations: mathematical properties of the Boltzmann equation, proofs of existence of solutions in particular cases, model kinetic equations
  • Monte Carlo methods and numerical solutions
  • Moment methods
  • Experimental methods
  • Gas-surface interactions
  • Aerospace. Examples include high speed flows, shock waves, nozzle expansions, high altitude aerodynamics.
  • Jets and plumes
  • Internal flows and vacuum systems
  • Reactive gas dynamics
  • Rarefied plasmas
  • MEMs and NEMs
  • Granular flows
  • Porous media

Popular repositories Loading

  1. sparta sparta Public

    Forked from sparta/sparta

    Public development project of the SPARTA DSMC software package http://sparta.github.io

    C++ 1

  2. .github .github Public

    contains the profile description

  3. piclas piclas Public

    Forked from piclas-framework/piclas

    PICLas is a parallel, three-dimensional PIC-DSMC solver developed cooperatively by the Institute of Space Systems, Institute of Aerodynamics and Gas Dynamics at the University of Stuttgart and the …

    Fortran

  4. hyStrath hyStrath Public

    Forked from hystrath/hyStrath

    Hypersonic / Rarefied gas dynamics code developments (GPL-3.0)

    C++

  5. fenicsR13 fenicsR13 Public

    Forked from lamBOOO/fenicsR13

    A Tensorial Mixed Finite Element Solver for the Linear R13 Equations Using the FEniCS Computing Platform (Mirror from https://git.rwth-aachen.de/lamBOO/fenicsR13).

    C++

  6. pantera-pic-dsmc pantera-pic-dsmc Public

    Forked from vonkarmaninstitute/pantera-pic-dsmc

    PANTERA is an open-source software for the simulation of nonequilibrium gas and plasma flows based on the Direct Simulation Monte Carlo and Particle-in-Cell methods.

    Fortran

Repositories

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