摘要
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.
An efficient compressible Euler equation solver for vortex-dominated flows is presented based on the a- daptive 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 identif- ying 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 effi- ciency of DAMR process. Additionally, the vortex-dominated flow is investigated by the method. The obtained re- sults are shown as a good agreement with the previous published data.
基金
Supported by the National Natural Science Foundation of China(11102179)
