A novel design: porous boundary condition for drag reduction of three dimensional rotating body of revolution------slender body
In this paper a novel design for a decelerator of high-speed rotating body of revolution was developed. A qualitative analysis and mapping the flow structure over a slender body with porous boundary condition used as decelerator was shown. This paper discusses research variables that directly impact the ability to obtain turbulent flow and techniques to increase flow separation hence increase total drag. The work to be presented herein is a Computational Fluid Dynamics investigation of the complex fluid mechanisms that occur over slender body with using a porous boundary condition as decelerator, specifically with regard to the total aerodynamic drag. The results will show, that the adding a deceleration device will change the flow structure around the body especially with regard to the pressure drag, boundary layer separation, oblique shock waves transition, expansion fan and wake. The results such as contour plots of Mach number for three different angles of attack, 0-deg, 10-deg, and 20-deg, will demonstrate that the aerodynamic forces and the velocity are changed when the porous boundary condition is integrated with the slender body.
Supersonic flow viscous flow boundary layer separation deceleration devices numerical analysis total drag
K.Alhussan
Deputy Director of Space Research Institute, King Abdulaziz City for Science & Technology, Riyadh, Saudi Arabia.
国际会议
The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)
上海
英文
2007-08-15（万方平台首次上网日期，不代表论文的发表时间）