A Novel Model for CFD-Based Throughflow Analysis of Film-Cooled Turbine Blade  

作　　者：MAO Yinbo CHEN Ziyu SU Xinrong YUAN Xin 

机构地区：[1]Department of Energy and Power Engineering,Tsinghua University,Beijing,100084,China

出　　处：《Journal of Thermal Science》2022年第5期1759-1772,共14页热科学学报（英文版）

基　　金：funded by the National Natural Science Foundation of China (Project 51876098);the National Natural Science Foundation of China (Project 51911540475);the National Science and Technology Major Project (2017-Ⅲ-0009-0035)。

摘　　要：This paper presents a novel approach of modeling the air-cooled turbine with CFD-based throughflow analysis. Starting from the basic equations of motion, governing equations and source terms for mass, momentum and energy are formulated in an analytical manner. These source terms are to mimic the authentic injection-mainstream interactions with easy implementation. The source terms in the aero-cooling scenario are related to corresponding sources in the aerodynamic-only analysis. Based on such formulations, a novel strategy is developed to estimate aerodynamic characteristics of a blade row under film cooling with known characteristics under no cooling. The model and the strategy are validated in the classic NASA E3 turbine guide vane under various operating conditions. Sensitivity studies of input parameters are conducted to evaluate the applicability of the proposed model. Specifically, the flow rate distributions of cooling flow at different cooling holes are crucial for accurate predictions.

关 键 词：film cooling turbine aerodynamics THROUGHFLOW 

分 类 号：TH69[机械工程—机械制造及自动化] O35[理学—流体力学]