A sharp interface method for high-speed multi-material flows: strong shocks and arbitrary materialpairs

作者：Sambasivan Shiv K; Udaykumar H S^*

来源：International Journal of Computational Fluid Dynamics, 2011, 25(3): 139-162.

DOI：10.1080/10618562.2011.558011

• sharp interface methods
• Cartesian grid methods
• local mesh refinement
• ghost fluid method (GFM)
• compressible multiphase flows
• compressible multi-material flows
• shock-interface interactions

A general framework is developed for solving high-speed and high-intensity multi-material interaction problems on adaptively refined Cartesian meshes. The framework is applicable for interfaces separating materials with very different properties and in the presence of strong shocks. A sharp interface treatment is maintained through a modified Ghost Fluid Method. The embedded boundaries are tracked and represented with level sets. A tree-based Local Mesh Refinement scheme is employed to efficiently resolve the desired physics. Results are shown for situations that cover varied combination of materials (fluids, rigid solids and deformable solids) with careful benchmarking to establish the validity and the versatility of the approach.

• 出版日期2011