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首页> 外文会议>Int. Symposium on Heat Transfer >THREE-DIMENSIONAL COUPLED AERODYNAMIC AND THERMAL ANALYSIS OF A TURBINE NOZZLE GUIDE VANE
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THREE-DIMENSIONAL COUPLED AERODYNAMIC AND THERMAL ANALYSIS OF A TURBINE NOZZLE GUIDE VANE

机译：涡轮喷嘴导向叶片的三维耦合空气动力学和热分析

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摘要

The thermal design of contemporary high-pressure turbine nozzle guide vanes clearly represents one of the most difficult engineering tasks in the design of any modem gas turbine. To dale, many investigations are performed examining the flow behavior in the interior of cooling channels on the one hand and the aerodynamic aspects of the blade passage on the other hand. One of the major challenges to present research on blade cooling is the combination of both topics.This paper presents results for the 3-D coupled aerodynamic and thermal numerical investigation of a convection-cooled, high-pressure turbine nozzle guide vane. The blade is cooled in its interior by ten channels to which cooling air has been admitted. The flow in these channels is included in the simulations. Thus, for the blade itself, no further boundary conditions are necessary except at the casing and shroud. The temperature distribution in the blade is determined fully coupled, depending only on the flow conditions in the passage and in the cooling channels. The comparison of numerical and experimental results demonstrates the potential of the code for the prediction of both the flow field and the temperature field.A code for the coupled simulation of fluid flow and heal transfer in solid bodies is employed for the calculations. The numerical scheme works on the basis of an implicit finite volume method combined with a multi-block technique. The full, compressible 3-D Navier-Stokes equations arc solved within the fluid region and the Fourier equation for heat conduction is solved within the solid body region.
机译：现代高压涡轮喷嘴导向叶片的热设计清楚地代表了任何调制解调器燃气轮机设计中最困难的工程任务之一。为了戴尔，在另一方面，在一方面检查冷却通道内部的流动行为以及刀片通道的空气动力学方面进行了许多研究。展示刀片冷却研究的主要挑战之一是两个主题的组合。本文提出了对流冷却的高压涡轮喷嘴导向叶片的3-D耦合空气动力学和热数研究的结果。刀片在其内部冷却到其内部通道，冷却空气已被录取。这些信道中的流量包括在模拟中。因此，除了叶片本身，除了壳体和护罩之外，不需要进一步的边界条件。叶片中的温度分布完全耦合，仅根据通道和冷却通道中的流动条件来确定。数值和实验结果的比较表明了用于预测流场和温度场的代码的电位。用于计算的流体流动和愈合转移的耦合模拟的代码用于计算。数值方案基于与多块技术结合的隐式有限体积方法工作。在固体区域内求解在流体区域内的完整压缩3-D Navier-Stokes等式和用于导热的傅里叶方程。

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