采用空间五阶精度紧致-WENO混合格式,数值模拟了Mc=0.2和1.0的二维空间发展超音速平板混合层被动标量混合过程.并与Clemens的实验结果进行比较,结果表明,被动标量时均值与实验结果符合很好,而被动标量脉动均方根值与实验值相比较小.还研究了可压缩性对标量混合过程的影响,随着对流马赫数的增加,被动标量时均值剖面变化不大,而脉动均方根峰值增大.
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