# TestLucaG

## Contents |

## 1 centralFoam

### 1.1 Introduction

*centralFoam* is a compressible flow solver based on the family of central/central-upwind schemes.
Initially developed to deal with non-viscous flows (see first document) it has been recently extended to viscous (yet only incompressible and laminar) flows and to low-Mach and truly incompressible flows through time-preconditioning. Furthermore R-K time integration and some standard convergence acceleration techniques have been implemented (see second document).

Work is still ongoing (in my free time) towards full viscous (incompressible & compressible, laminar & turbulent) capacity and to improve performance when computing incompressible flows.

### 1.2 Documents

## 2 MGsimpleFoam

### 2.1 Introduction

*MGsimpleFoam* is an FAS-multigrid solver for incompressible viscous (yet only laminar) flow. It is the first example of an FAS-multigrid solver based on a new *FASMGagglomeration* class, which takes care of automatically generating the required coarse-level meshs and of the inter-level field transfer operations.
Similarly to the standard *simpleFoam* solver, hence its name, it uses the 'SIMPLE' algorithm as basic smoother in the multigrid process.

Work is still ongoing (in my free time) towards full viscous (laminar & turbulent) capacity and the application to parallel computations on large 3D meshes.

The FAS-multigrid methodology might be extended, using the same *FASMGagglomeration* class, to most other solvers, including the compressible/incompressible flow solver *centralFoam*

### 2.2 Documents

--LucaG 22:15, 1 Feb 2007 (CET)