Adaptive hybrid Cartesian grid method for vortex-dominated flows

作者：Hu O; Zhao N; Liu J; Wu J

来源：Transactions of Nanjing University of Aeronautics & Astronautics, 2013, 30(3): 221-226.

• Adaptive mesh
• Hybrid Cartesian grid
• Vortex identification
• Vortex-dominated compressible flows

An efficient compressible Euler equation solver for vortex-dominated flows is presented based on the adaptive hybrid Cartesian mesh and vortex identifying method. For most traditional grid-based Euler solvers, the excessive numerical dissipation is the great obstruction for vortex capturing or tracking problems. A vortex identifying method based on the curl of velocity is used to identify the vortex in flow field. Moreover, a dynamic adaptive mesh refinement (DAMR) process for hybrid Cartesian gird system is employed to track and preserve vortex. To validate the proposed method, a single compressible vortex convection flow is involved to test the accuracy and efficiency of DAMR process. Additionally, the vortex-dominated flow is investigated by the method. The obtained results are shown as a good agreement with the previous published data.

• 出版日期2013
• 单位南京航空航天大学