摘要
试验研究了三角形埋入式涡流发生器几何参数对其涡各参数的影响，发展了半片式三角形埋入式涡流发生器。试验中采用小型五孔探针获得涡流发生器后不同轴向截面处的速度矢量图，用高斯涡核模型及非线性拟牛顿最小二乘法拟合涡量、涡核半径、涡心高度等参数，分析了这些参数沿程变化趋势。
The effects of the geometric variables of a submerged deltaic vortex generator on the parameters of the vortex have been experimentally studied and a type of half deltaic vortex generator has been developed.A small-size five-hole pressure probe was used to measure the velocity profiles at several transverse sections behind the vortex generators and according to the velocity profiles,the Gauss model of vortex core and quasi-Newton non-linear least square method were used to determine the parameters of single vortex such as vorticity,radius and height of the vortex core.The variation of these vortex parameters along the stream wise was analysed.In the experimental investigation the vortex parameters between the submerged deltaic vortex generator and the submerged concave vortex generator were also compared.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
1996年第3期241-244,共4页
Journal of Aerospace Power
关键词
涡流发生器
速度分布
几何参数
Swirler Velocity distribution Geometric parameters Vortex
