本文采用数值方法模拟了一个三孔探头周围与测压孔内的二维可压缩非定常流场,研究了动态效应对探头绕流和测孔压力的影响以及相应的测量误差.结果显示当流场高频振荡时 (如:2000 Hz),其有效测量范围内的速度误差为2-4%,气流角误差约为l0%之内.当流动接近失速时,该项误差迅速增大.文中还给出了高频振荡流中测压孔内外非定常与准定常流场分布之间的差异.
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