Space-Time method for flow computations with slip interfaces and topology changes (ST-SI-TC)

作者：Takizawa Kenji^*; Tezduyar Tayfun E; Asada Shohei; Kuraishi Takashi

来源：Computers & Fluids, 2016, 141: 124-134.

DOI：10.1016/j.compfluid.2016.05.006

• Space Time Variational Multiscale method
• ST-VMS
• ST Slip Interface method
• ST-SI
• ST Topology Change method
• ST-TC
• ST-SI-TC method
• Flow around a tire
• Road contact
• Tire deformation

The Space-Time Variational Multiscale(ST-VMS) method was introduced to function as a moving-mesh method. It is the VMS version of the Deforming-Spatial-Domain/Stabilized ST (DSD/SST) method. It has reasonably good turbulence modeling features and serves as a core computational method. The ST Slip Interface (ST-SI) method was introduced to addresses the challenge involved in high-resolution representation of the boundary layers near spinning solid surfaces. The mesh covering a spinning solid surface spins with it and thus maintains the high-resolution representation near it. The ST-TC method was introduced for moving-mesh computation of flow problems with topology changes, such as contact between solid surfaces. It deals with the TC while maintaining high-resolution boundary layer representation near solid surfaces. The "ST-SI-TC" method we introduce here integrates the ST-SI and ST-TC methods in the ST-VMS framework. It enables accurate flow analysis when we have a spinning solid surface that is in contact with a solid surface. We present two test computations with the ST-SI-TC method, and they are both with models of flow around a rotating tire with road contact and prescribed deformation, one with a 2D model, and one with a 3D model.

• 出版日期2016-12-15