|
[Sponsors] |
July 28, 2007, 22:56 |
discontinunous galerkin method
|
#1 |
Guest
Posts: n/a
|
hi guys who can tell me the advantage of Discontinunous galerkin method, has anyone already used this method in hypersonic flow?
|
|
July 29, 2007, 01:55 |
Re: discontinunous galerkin method
|
#2 |
Guest
Posts: n/a
|
It was good for handling of shock because it contains the characters of FVM as well as those of FEM. It's pretty close to the FVM in some sensors.
|
|
July 29, 2007, 15:02 |
Re: discontinunous galerkin method
|
#3 |
Guest
Posts: n/a
|
Some nice things I can remember about DGFEM, randomly listed.
High order schemes are easy to construct in a systematic way. Order or accuracy can be varied from element to element (p-refinement) Easier to use for hybrid approaches like RANS-LES since model can be varied from element to element. hp-refinement is possible leading to use of optimal grid sizes Very small stencil, each elements has to communicate with its immediately adjacent elements only. Good for parallellization. Simple communication pattern. Fixed stencil irrespective of order of accuracy Finite volume comes out as a low order version of DGFEM Complex geometry - unstructured grids can be used Discontinuous shape functions * Upwind fl‚ux formulae can be used * Conservative on each element * Shock capturing scheme * Any type(s) of element * Hanging nodes OK - Cartesian grids Block-diagonal mass matrix - decoupled between elements No mass lumping required Simple communication pattern: Good parallelizability |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Code for Discontinuous Galerkin Method ? | Ameya J | Main CFD Forum | 2 | April 21, 2011 06:45 |
Navier stokes and the standard Galerkin method | micheldup | Main CFD Forum | 0 | March 1, 2011 10:24 |
Weak statement for Galerkin Method | rugabug | Main CFD Forum | 0 | March 26, 2010 20:19 |
Galerkin Method Applicable for Finite-Volume? | Scott | Main CFD Forum | 0 | September 7, 2008 20:02 |
Discontinuous Galerkin finite element method | Tony | Main CFD Forum | 0 | May 27, 2003 19:48 |