燃气轮机燃烧室过渡段“多造型函数组合”的设计方法  

Design Method for Transition Pieces in Gas Turbine Combustors Based on Multi-modeling Function Combination

作　　者：耿俊杰 祁海鹰[1] GENG Junjie;QI Haiying(Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学能源与动力工程系,北京100084

出　　处：《动力工程学报》2020年第7期540-548,555,共10页Journal of Chinese Society of Power Engineering

摘　　要：提出了一种"多造型函数组合"的燃烧室过渡段气动造型设计方法,包括设计原则、技术路线以及坐标系设置、进出口轮廓线离散化等设计步骤,并给出了中心线为SS形、SU形和凹形3种典型气动造型的设计示例。对于出口环扇形圆角半径较小和圆心角较大的2种特殊情况,给出了改进的设计方法和设计示例。结果表明:所提方法可便捷地设计出从进口圆形平滑过渡到出口环扇形的多种几何形状,适用于范围较广的气动造型设计,可作为燃烧室过渡段设计的重要手段。An aerodynamic modeling design was proposed for the transition pieces(TPs)in gas turbine combustors based on multi-modeling function combination,with focus on design principles,technical routes and design steps including coordinate system settings,import and export contour discretization,etc.Three typical designs of TPs were given,of which their center lines were respectively in the shape of SS,SU and concave.For two special cases of TPs respectively with small fan radius of outlet ring and with large center angle,an improved design method was put forward,together with design examples.Results show that via the method proposed,a veriety of gemetric shapes could be designed for smooth transition from the inlet circular to the outlet ring fan,which adapts to a wide range of aerodynamic design,and could be used as an important means in designing the TPs.

关 键 词：燃气轮机 燃烧室 过渡段 气动造型 多造型函数组合 

分 类 号：TK473[动力工程及工程热物理—动力机械及工程]