Compressible Shear-Layer Mixing Experiments

这笔赠款将支持关于可压缩性对同向流动的流动之间的混合的影响的实验研究。混合层中的对流马赫数将从低到高从低到高变化。我们将研究混合层的几何特征及其演化和相互作用，光学诊断包括平面瑞利散射和平面激光诱导荧光。众所周知，在高相对流速下，两股气流之间的混合会被降解，但其原因尚不清楚。了解和控制高速混合层在燃烧和推进系统中至关重要。

This grant will support experimental research on the effect of compressibility on mixing between co-flowing streams. Convective Mach numbers in the mixing layers will vary from low to as high as 3. The geometrical features and their evolution and interactions will be studied, with optical diagnostics including planar Rayleigh scattering and planar laser-induced flurescence. Mixing between two streams is known to be degraded at high relative flow velocites, but the reason is not yet understood. Understanding and control of high speed mixing layers is of crucial importance in combustion and propulsion systems.//