Two dimensional isotropic mesh adaptation for viscous flow of a kinetic theory gas using TDEFM

Matt-Hew Smith, M. N. MacRossan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Adaptive Mesh Refinement, or AMR, has been used as a tool in CFD to better resolve and capture compressible flows, both for continuum solvers [5, 4, 8] and DSMC (Direct Simulation Monte Carlo) solvers [6, 7, 21]. Presented is the True Direction Equilibrium Flux Method, or TDEFM [1, 2, 3] applied with an adaptive meshing technique and diffusely reflecting boundary conditions. Continuum methods generally transfer fluxes between directly adjacent cells only; TDEFM is capable of transferring fluxes of mass, momentum and energy from any source cell to any given destination cell. TDEFM has been previously shown to provide superior results when compared to existing continuum solvers [1, 2, 3] for unaligned flows on cartesian grids. In the present method, cells are isotropically divided in order to more accurately resolve the flow field. Various mesh adaption parameters are employed, taken from both continuum and direct solver applications on adaptive meshes. Results have shown that use of an adaptive mesh with an adaptation parameter based on the local mean free path l has reduced computational requirements considerably while maintaining resolution of important features of the flow.

Original languageEnglish
Title of host publicationProceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC
Pages586-593
Number of pages8
Publication statusPublished - 2007 Dec 1
Event16th Australasian Fluid Mechanics Conference, 16AFMC - Gold Coast, QLD, Australia
Duration: 2007 Dec 32007 Dec 7

Publication series

NameProceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC

Other

Other16th Australasian Fluid Mechanics Conference, 16AFMC
CountryAustralia
CityGold Coast, QLD
Period07-12-0307-12-07

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

Fingerprint Dive into the research topics of 'Two dimensional isotropic mesh adaptation for viscous flow of a kinetic theory gas using TDEFM'. Together they form a unique fingerprint.

Cite this