A block structured Low Mach Number MPV scheme for heterogeneous domain decomposition

A block structured Low Mach Number MPV scheme for heterogeneous domain decomposition

Roller, S.P.
Klimach, H.
Munz, C.D.

2006-09-05

This paper is concerned with heterogeneous domain decomposition for semi-implicit Low Mach number schemes. The actual scheme is the Multiple Pressure Variables (MPV) scheme, which can be applied for a large range of Low Mach Number flows, ranging from natural convection flows with large temperature and density changes to aero-acoustics with recoupling of the acoustic to the flow. For aero-acoustic calculations, the numerical costs often are high due to the large computational domains. To reduce the computational effort, the domain is divided into non-overlapping sub-domains with non-matching cells. The future aim is to couple the semi-implicit code to domains with explicit time marching schemes. Therefore methods are considered, that do not require information from the neighbouring domains during one time step. This leads to a block-structured implementation spanning the solution space for the CG--solver over every single block instead of the hole computational domain. Information is exchanged at the beginning or end of the time step, not during the iteration steps.

low mach
multi-scales
semi-implicit schemes
heterogeneous domain decomposition
coupling

http://resolver.tudelft.nl/uuid:460a83a6-917c-4026-93fd-7fda55884a0c

Conference proceedings

conference paper

(c) 2006 Roller, S.P.; Klimach, H.; Munz, C.D.