NUMERICAL SIMULATION OF HIGHLY UNDEREXPANDED AXISYMMETRIC JET WITH RUNGE-KUTTA DISCONTINUOUS GALERKIN FINITE ELEMENT METHOD

作     者：CHEN Er-yun MA Da-wei LE Gui-gao WANG kai ZHAO Gai-ping CHEN Er-yun, MA Da-wei, LE Gui-gao, WANG kai School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China ZHAO Gai-ping School of Medical Instrument, Shanghai university of Science and Technology, Shanghai 200093, China

作者机构：School of Mechanical Engineering Nanjing University of Science and Technology Nanjing 210094 China School of Medical Instrument Shanghai university of Science and Technology Shanghai 200093 China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2008年第20卷第5期

页      面：617-623页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

主　　题：underexpanded jct shock RKDG finite element method 

摘      要：Highly undcrexpanded axisymmctric jet was simulated using the Runge-Kutta Discontinuous Galerkin （RKDG） finite element method, which, based on two-dimensional conservation laws, was used to solve the axisymmetric Euler equations. The computed results show that the complicated flow field structures of interest, including shock waves, slipstreams and the triple point observed in experiments could be well captured using the RKDG finite element method. Moreover, comparisons of the Mach disk location exhibit excellent agreements between the computed results and experimental measurements, indicating that this method has high capability of capturing shocks without numerical oscillation and artificial viscosity occurring near the discontinuous point.