sunfluidh:sunfluidh_description
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Les deux révisions précédentesRévision précédenteProchaine révision | Révision précédenteDernière révisionLes deux révisions suivantes | ||
sunfluidh:sunfluidh_description [2016/01/19 14:52] – yann | sunfluidh:sunfluidh_description [2017/12/02 14:42] – yann | ||
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==== A brief Description of SUNFLUIDH ==== | ==== A brief Description of SUNFLUIDH ==== | ||
+ | [[: | ||
- | SUNFLUIDH is a computational software developped by Yann Fraigneau at LIMSI in order to maintain the know-how of the lab in terms of numerical methods development and to be able to respond to the needs of the searchers | + | |
- | A brief description of the computational software is here presented. More details are provided in the documents that can be downloaded [[ https:// | + | SUNFLUIDH is a computational software developped by Yann Fraigneau at LIMSI in order to maintain the know-how of the lab in terms of numerical methods development and to be able to respond to the needs of the researchers |
+ | A brief description of the computational software is here presented. | ||
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* multi-component flows, reactive flows | * multi-component flows, reactive flows | ||
* turbulent flows (by means of DNS or LES approaches) | * turbulent flows (by means of DNS or LES approaches) | ||
- | | + | * incompressible |
=== Geometries === | === Geometries === | ||
- | The geometrical configurations mainly rely on a cartesian topology as the mesh is restricted to an orthogonal | + | The geometrical configurations mainly rely on a cartesian topology as the mesh is restricted to an orthogonal |
Cylindrical geometries are also available. | Cylindrical geometries are also available. | ||
+ | |||
=== Numerical Methods === | === Numerical Methods === | ||
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* 2nd order Crank-nicolson method (semi-implicit scheme) | * 2nd order Crank-nicolson method (semi-implicit scheme) | ||
* 2nd order multi-step operator splitting methods (explicit schemes for reactive flows) | * 2nd order multi-step operator splitting methods (explicit schemes for reactive flows) | ||
- | * 4th order centered compact scheme in space coupled with the following time discretization | + | * 4th order centered compact scheme in space coupled with the following time discretization |
* 2nd order Crank-nicolson method (semi-implicit scheme) | * 2nd order Crank-nicolson method (semi-implicit scheme) | ||
* 3rd order Runge-Kutta scheme (explicit scheme) | * 3rd order Runge-Kutta scheme (explicit scheme) | ||
+ | * Hydrid scheme 2nd order Crank-Nicolson scheme / 3rd order Runge-Kutta scheme | ||
The projection method implies a Poisson' | The projection method implies a Poisson' | ||
* The partial diagonalisation of the laplacian operator (a direct method suitable for separate problems only) | * The partial diagonalisation of the laplacian operator (a direct method suitable for separate problems only) | ||
- | * The Relaxed Gauss-Seidel method | + | * The Relaxed Gauss-Seidel method |
This last method can be used for different formulations of the Poisson equation :\\ | This last method can be used for different formulations of the Poisson equation :\\ | ||
- | \(\Delta \phi = S\) | + | * $\nabla\frac{1}{\rho}\nabla |
- | where S is proportional to the divergence of the momentum. \\ | + | |
- | | + | |
- | where S is proportional to the divergence of the velocity. | + | [[: |
sunfluidh/sunfluidh_description.txt · Dernière modification : 2017/12/02 14:42 de yann