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| Moving grid method in numerical simulation of compressible multi-material flows |
| Received:March 31, 2008 Revised:October 23, 2009 |
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| DOI：10.7511/jslx20102035 |
| KeyWord:Compressible multi-material flows Moving Grids Grid local re-meshing technology AL E formulations HLLC Scheme |
| Author | Institution |
| 王兵 |
南京航空航天大学 民航学院,南京 |
| 司海青 |
南京航空航天大学 民航学院,南京 |
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| Abstract: |
| In the numerical simulation of compressible multi-material flows, the material interface is defined as a special internal boundary composed by unst ruct ured grid edges, either side of which corresponds to a grid of one material. Riemann problem is solved in order to track the motion of the grid points on the material interface and local re-meshing technology is applied to deal with the large-scale deformation of the moving grids. At the same time, the material interface is defined as a kind of grid-deforming boundary to avoid negative grid volumes near the interface. HLLC scheme is used to solve AL E formulations to obtain the resolutions of the whole multi-material fluid domain. Several multi-material modules are computed to indicate that the method in this paper is feasible and successful in tracking the motion state of the material interface. |