GOALI: Experiments and Simulation on the Flow and Heat Transfer Near the Hub Endwall of a Stater Vane Passage

由于高温、复杂的流动以及对结构部件提供关键冷却的需要，燃气轮机产生了非常恶劣的热环境。 由于流动的三维性质，提供有效的冷却已被证明是一个困难的问题。 本研究将探讨涡轮机导叶通道内之流场与热传特性，并以端壁区域为研究重点。 将进行实验和模拟，通过二次空气射流和异形通道改变涡流运动。 其目的是了解未改变的流场的细节，控制策略的效果，并开发有效的技术来建模和模拟改变的流，从而导致改进的设计技术。 实验将涉及流动可视化，速度测量和液晶热成像。 将使用雷诺平均纳维尔-斯托克斯和分离涡模拟方法进行建模。 这项工作将是亚利桑那州州立大学和联合信号航空航天发动机，凤凰城，亚利桑那州之间的合作努力。

Gas turbines create a very harsh thermal environment because of the high temperatures, complex flows, and the need to provide critical cooling to the structural components. Providing effective cooling has proven to be a difficult problem because of the three dimensional nature of the flow. The research will explore the flow field and heat transfer in a turbine vane passage with emphasis on the region of the endwall. Experiments and simulations will be carried out in which the vortical motions will be altered through secondary air jets and contoured passages. The objectives are to understand the details of the unaltered flow field, the effect of control strategies, and to develop effective techniques for modeling and simulating the altered flow, thus leading to improved design techniques. The experiments will involve flow visualization, velocity measurements, and liquid crystal thermography. Modeling will be done using both the Reynolds averaged Navier Stokes and detached eddy simulation approaches. The work will be a cooperative effort between Arizona State University and Allied Signal Aerospace Engine, Phoenix, AZ.