实验流体力学2011，Vol.25Issue(5)：10-15,20,7.
圆主-平板角区湍流流动控制的风洞试验研究
Experimental study on control of the cylinder-flat-plate turbulent junction flow
摘要
Abstract
The horseshoe vortex system in the juncture region is usually a disadvantageous factor to the flow. An inclined rod upstream of the cylinder can modify the flow structure in the circular cylinder flat plate junction region. The effects of the rods, which were located upstream of the primary vortex, on the skin friction line and the distribution of the pressure were expounded for the turbulent junction flows, with oil-flow and manometry. The results from the oil-flow experiments show that an inclined rod can alter the 3-D separation, and the new separation line is induced by the combination of the cylinder and the rod. The action can be classified into two categories. The separation lines shift downstream greatly, so the wake from the cylinder near the plate becomes narrows. The pressure distribution is modified by the inclined rod, the adverse pressure gradient decreases, so the separation is weakened.关键词
分离流动/复杂流动/角区流动/马蹄涡/流动控制Key words
separated flows/ complex flows /junction flows/ horseshoe vortex/ flow control分类
航空航天引用本文复制引用
王建明,刘炜,艾延廷,王成军,徐志晖..圆主-平板角区湍流流动控制的风洞试验研究[J].实验流体力学,2011,25(5):10-15,20,7.基金项目
辽宁省自然科学基金(20102177) （20102177）
