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首页> 外文会议>The 2001 ASME International Mechanical Engineering Congress and Exposition, 2001, Nov 11-16, 2001, New York, New York >ANALYSIS AND MULTI-DISCIPLINARY OPTIMIZATION OF INTERNAL COOLANT NETWORKS IN TURBINE BLADES
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ANALYSIS AND MULTI-DISCIPLINARY OPTIMIZATION OF INTERNAL COOLANT NETWORKS IN TURBINE BLADES

机译：涡轮叶片内部冷却网络的分析和多学科优化

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摘要

This paper presents the theoretical methodology, conceptual demonstration, and validation of a fully automated computer program for the inverse design and optimization of internal convectively cooled three-dimensional axial gas turbine blades. A parametric computer model of the three-dimensional internal cooling network was developed, including the automatic generation of computational grids. A boundary element computer program was written to solve the steady-state non-linear heat conduction equation inside the internally cooled and thermal barrier-coated turbine blade. A finite element algorithm was written to model an arbitrary network of internal coolant passages for the calculation of the internal heat transfer coefficients, pressure losses, local flow rates, the effects of centrifugal pumping, heating of the coolant fluid, and forced convection from the thermal model of the solid to the coolant fluid. The heat conduction and internal flow analyses were iteratively coupled to account for the heat balance between the blade and the coolant fluid. The computer-automated design and optimization system was demonstrated on the second high-pressure turbine blade row of the Pratt & Whitney F100 engine. The internal cooling configuration and local heat transfer enhancements (boundary layer trip strips and pin fins) inside the three-dimensional blade were optimized for maximum cooling effectiveness and durability against corrosion and thermo-mechanical fatigue.
机译：本文介绍了用于内部对流冷却三维轴流燃气轮机叶片的逆向设计和优化的全自动计算机程序的理论方法论，概念论证和验证。开发了三维内部冷却网络的参数化计算机模型，包括自动生成计算网格。编写了一个边界元计算机程序来求解内部冷却和热障涂层涡轮叶片内部的稳态非线性热传导方程。编写了有限元算法，以对内部冷却剂通道的任意网络进行建模，以计算内部传热系数，压力损失，局部流量，离心泵的作用，冷却剂流体的加热以及热对流的强制对流固体到冷却液的模型。导热和内部流动分析反复进行耦合，以说明叶片和冷却液之间的热平衡。在Pratt＆Whitney F100发动机的第二高压涡轮叶片排上展示了计算机自动设计和优化系统。优化了三维叶片内部的内部冷却配置和局部传热增强功能（边界跳闸条和针状鳍片），以实现最大的冷却效率以及对腐蚀和热机械疲劳的耐久性。

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