Effects of Leading-Edge Radius on Aerodynamic Characteristics of 50º Delta Wings

Effects of Leading-Edge Radius on Aerodynamic Characteristics of 50º Delta Wings
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前缘半径对50°三角翼气动特性的影响

DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
N. Verhaagen
N. Verhaagen
中科院分区：
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文献类型：
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作者：
N. Verhaagen

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该研究重点关注前缘半径对 50o 后掠角三角翼模型气流的影响。测试了三种模型，一种模型具有锋利的前缘，另两种模型具有不同半径的半圆形前缘。使用油流可视化和立体粒子图像测速 (SPIV) 技术研究模型表面内外的涡流。显示前缘半径会影响涡流的大小和位置，以及模型上涡流爆发的位置。因此，前缘半径也会影响作用在 50o 三角翼上的力和力矩。
The study focuses on the effects of the leading-edge radius on the flow over 50o swept delta wing models. Three models were tested, one model having a sharp leading edge and the other two having a semi-circular leading edge of different radius. The vortical flow on and off the surface of the models was investigated using an oil-flow visualization and a Stereo Particle Image Velocimetry (SPIV) technique. The leading-edge radius is shown to affect the size and location of the vortices and also the vortex bursting location over the models. As a result of this, the leadingedge radius also affects the forces and moment acting on a 50o delta wing.