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

由于高温、复杂的流动以及需要为结构部件提供关键的冷却，燃气轮机创造了一个非常恶劣的热环境。由于气流的三维特性，提供有效的冷却已被证明是一个难题。本研究将探讨涡轮叶片通道内的流场和传热，重点是端壁区域。实验和模拟将通过二次空气射流和轮廓通道来改变旋涡运动。目标是了解未改变流场的细节，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动，从而导致改进的设计技术。实验将包括流动可视化、速度测量和液晶热成像。建模将使用雷诺兹平均纳维尔斯托克斯和分离涡流模拟方法。这项工作将由亚利桑那州立大学和位于亚利桑那州凤凰城的联合信号航空发动机公司合作完成。

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.