Effect of Energy Pulse on Shock/Shock Interactions
This study investigates the effect of energy addition on the Edney IV interaction to mitigate stress and heat loads on the surface of a sphere. The full three-dimensional Reynolds-averaged Navier-Stokes equations are solved with the k-ω turbulence model. The surface pressure prediction without energy addition is found to be in good agreement with experiments. For flow control, a spherical energy pulse is deposited upstream of the primary triple point. The unsteady interaction of the energy spot and its induced blast wave with the oblique shock, the distorted bow shock and the impinging supersonic jet is examined. The simulations indicate significant impact on the heat flux and pressure distribution on the surface of the blunt body. The instantaneous pressure and heat flux increase when the blast wave and hot spot hit the surface, and decrease when the expansion waves reach the surface. The integrated stress and thermal loads are reduced mainly due to the effect of the expansion waves.
shock waves energy deposition Edney IV interaction
Yan, Hong Gaitonde, Datta
School of Power and Energy, Northwestern Polytechnical, Xian, P.R.China, 7100720 Department of Mechanical and Aerospace Engineering, Ohio State University, Columbus, OH 43210
国际会议
The 8th Sino-Russia High-speed Flow Conference(第八届中俄高超声速流体力学研讨会)
上海
英文
62-69
2011-11-21（万方平台首次上网日期，不代表论文的发表时间）