Leading-Edge Radius Effects on Aerodynamic Characteristics of 50-Degree Delta Wings
Leading-Edge Radius Effects on Aerodynamic Characteristics of 50-Degree Delta Wings
复制标题
前缘半径对 50 度三角翼气动特性的影响
DOI：
10.2514/1.c031550
复制
发表时间：
2012
影响因子：
2.2
通讯作者：
N. Verhaagen
中科院分区：
文献类型：
--
作者：
N. Verhaagen
实验研究了前缘半径对50 °后掠三角翼模型绕流的影响。测试了三个模型;一个模型具有尖锐的前缘，另外两个具有不同半径的半圆形前缘。进行了六分力平衡测量，并表明前缘半径影响作用在模型上的力的水平和斜率。采用油流显示和立体粒子图像测速技术研究了模型表面上和表面外的旋涡流动。示出的前缘半径的影响的位置，大小和强度的旋涡和旋涡破裂位置的模型。流量数据与余额数据相关。
The experimental study focuses on the effects of the leading-edge radius on the flow over 50 deg swept delta wing models. Three models were tested; one model has a sharp leading edge, and two others have a semicircular leading edge of a different radius. Six-component balancemeasurementswere performedand indicated that the leading-edge radius affects the level and slope of the forces acting on the models. The vortical flow on and off the surface of the models was investigated using an oil flow visualization and a stereo particle image velocimetry technique. The leading-edge radius is shown to affect the location, size, and strength of the vortices and also the vortex breakdown location over the models. The flow data are correlated with the balance data.