Experimental and Numeric Investigation of Shock Focusing in a Concave Cavity
Experiment and numerical simulation were carried out to investigate on shock focusing in a test section where the planar incident shock wave was diffracted by an obstacle.A conventional shock tube was used to generate the planar shock.Incident shock Mach number of 1.4 and 2.1 were tested.High-speed camera was used to obtain the schlieren photos of the flow field.Third-order,three step strong stability-preserving(SSP)Runge-Kutta method,third-order weighed essential non-oscillation(WENO)scheme and adaptive mesh refinement(AMR)algorithm were adopted to simulate the shock waves interaction.Good agreement between experiments and numerical results was observed.Complex shock wave configuration and interaction such as shock reflection,shock-vortex interaction and shock focusing were observed in experiment and resolved in numerical calculation.Some new features are observed and discussed.The pressure history at apex of cavity wall was recorded and compared with the numerical results.
Shock tube Shock reflection Shock focusing Concave cavity
CHEN Xin ZHANG Qiang HE Li-Ming RONG Kang
Aeronautics and Astronautics Engineering Institute of Air Force Engineering University,Xian,China;C Aeronautics and Astronautics Engineering Institute of Air Force Engineering University,Xian,China
国际会议
The 5th International Symposium on Jet Propulsion and Power Engineering(第五届喷气推进与动力工程国际会议)
北京
英文
1-5
2014-09-15（万方平台首次上网日期，不代表论文的发表时间）