Gridless Adaptive Method for Simulating Unsteady Flows with Moving Shocks
In this paper,the gridless adaptive method is extended to simulate unsteady flows with moving shocks.In order to capture physical features like moving shocks with local high resolution,a technique of dynamic cloud of points is achieved by adopting clouds refinement and clouds coarsening procedures during the evolution of the unsteady flows.The regions for clouds refinement and clouds coarsening are determined at every time step by an indicator,which is defined as a function of the local pressure gradient.Once the regions of cloud of points to be adjusted are located by the indicator,the clouds refinement is carried out by introducing new points based on the existing structure of cloud of points,and the clouds coarsening procedure is also implemented simultaneously in order to control the size of the points distributed in the whole computational domain.The numerical test cases show that the gridless adaptive method presented can capture moving shocks with high resolution successfully in both inviscid and viscous test cases.
gridless adaptive method dynamic cloud of points unsteady flow Moving shock
Pu Saihu
Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P.R.China
国际会议
香港
英文
948-952
2012-12-11（万方平台首次上网日期，不代表论文的发表时间）