The Study on Oscillations of an Opposing Jet Flow
The oscillations of the flow field around a hemispherical nose with a supersonic opposing jet in a free stream of Mach 3.98 are computed. Two total pressure ratios of a jet to a free stream 0.2 and 0.6 are examined, which correspond to unsteady flow and steady flow, respectively. The axisymmetric Navier-Stokes equations with Shear-Stress Transport (SST) turbulence model are used as the governing equations in this paper. The oscillations of the flow field are reproduced, and mechanism of the oscillations is analyzed. Time-accurate algorithm is found to be necessary when an opposing jet flow field is solved, even for stable flow field. The time-averaged density distribution obtained in this paper is in good agreement with schlieren photograph. Also, the wall heat flux predicted in this paper is in agreement with experimental result.
Chengbin Jin Zhenqing Wang Hongqing Lv Cuie Zhang Yongjun Wang
College of Aerospace and Civil Engineering,of Harbin Engineering University 145 Nantong Street Harbin,Heilongjiang 150001 P.R.China
国际会议
深圳
英文
899-903
2008-12-10（万方平台首次上网日期，不代表论文的发表时间）