Computational Simulation and Experimental Measurements for a Delta Wing with Periodic Suction and Blowing
Computational Simulation and Experimental Measurements for a Delta Wing with Periodic Suction and Blowing
复制标题
周期性吸气和吹气三角翼的计算仿真和实验测量
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
S. Siegel
中科院分区：
文献类型：
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作者：
R. Cummings;S. Morton;S. Siegel
研究了70度后掠三角翼的低速层流流场。在非结构网格上得到了非定常、三维、可压缩的Navier-Stokes方程的解，以匹配在水洞中进行的实验结果。实验采用迎角为35°的三角翼，根弦雷诺数为4.07×104的自由流。在沿三角翼前缘发生周期性吸气和吹气的情况下，对流场进行了粒子图像测速。对计算结果进行了分析，并与实验结果进行了比较，说明了如何以协同的方式进行计算和实验。给出并讨论了主涡位置、涡爆发、二次涡和剪切层相互作用的详细信息。
The low-speed, laminar flowfield for a 70-deg sweep delta wing is investigated. Solutions to the unsteady, three-dimensional, compressible Navier-Stokes equations were obtained on an unstructured grid to match results from an experiment performed in a water tunnel. The experiment was conducted with the delta wing at an angle of attack of 35 deg and the freestream flow at a root-chord Reynolds number of 4.07 × 10 4 . Particle image velocimetry measurements were made for the flowfield while periodic suction and blowing was taking place along the delta wing leading edge. The computational results are analyzed and compared with the experimental results to show how computations and experiments can be conducted in a synergistic fashion. Details about the primary vortex location, vortex burst, secondary vortex, and shear layer interaction are shown and discussed