Direct Numerical Simulation of the Pulsed Arc Discharge in Supersonic Compression Ramp Flow

作     者：SONG Guoxing LI Jun TANG Mengxiao SONG Guoxing;LI Jun;TANG Mengxiao

作者机构：Aeronautics Engineering CollegeAir Force Engineering UniversityXi’an 710038China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2020年第29卷第6期

页      面：1581-1593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] 0801[工学-力学（可授工学、理学学位）] 

基　　金：sponsored by the National Natural Science Foundation of China(91941105 51522606 and 51907205) 

主　　题：direct numerical simulation pulsed arc discharge shock waves turbulent boundary layer flow separation 

摘      要：Direct numerical simulation(DNS)of shock wave/turbulent boundary layer interaction(SWTBLI)with pulsed arc discharge is carried out in this *** subject in the study is a Ma=2.9 compression flow over a 24-degree *** numerical approaches were validated by the experimental results in the same flow *** heat source model was added to the Navier-Stokes equation to serve as the energy deposition of the pulsed arc *** streamwise locations are selected to apply energy *** effect of the pulsed arc discharge on the ramp-induced flow separation has been studied in *** DNS results demonstrate the incentive locations play a dominant role in suppressing the separated *** show that pulsed heating is characterized by a thermal blockage,which leads to streamwise *** incentive locations upstream the interaction zone of the base flow have a better control *** separation bubble shape shows asspikes,and the downstream flow of the heated region is accelerated due to the momentum exchange between the upper boundary layer and the bottom boundary *** high-speed upper fluid is transferred to the bottom,and thus enhances its ability to resist the flow *** stripe vortex structures are also generated at the edge of the ***,the turbulent kinetic disturbance energy is increased in the flow *** disturbances that originate from the pulsed heating are capable of increasing the turbulent intensity and then diminishing the trend of flow separation.