Advection by Compressible Turbulence

9221630 O’brien必须建立一个模型来预测标量性质（化学物质或热量）在湍流的可压缩流体中的传递。该模型基于涡流阻尼准正态模型，该模型是针对不可压缩湍流而开发的，即没有明显的密度波动。这些不包括在推广模型中。一个并行的努力将是开发一个直接数值模拟方案，用于校准和验证新模型。可压缩性的影响将是温和的，预期的状态将达到约0.70马赫数。在高速到达流中，可压缩湍流及其输运是很重要的。典型的模型应用将是燃烧和推进系统。＊＊＊

9221630 O'Brien A model is to be developed to predict the transport of a scalar property (either chemical species or heat) in a compressible fluid which is turbulent. The model is based on the Eddy Damped Quasi Normal model which has been developed for incompressible turbulence, that is, without significant density fluctuations. These are not to be included by generalizing the model. A parallel effort will be the development of a Direct Numerical Simulation scheme to be used to calibrate and validate the new model. Compressibility effects will be moderate, the intended regime being up to a Mach number of about 0.70. Compressible turbulence, and transport by such turbulence, is important in high speed reaching flows. Typical model application would be to combustion and propulsion systems. ***