Aerodynamic design by jointly applying S2 flow surface calculation and modern optimization methods on multistage axial turbine

2008年第2卷第1期

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《能源前沿（英文）》 >> 2008年第2卷第1期 doi: 10.1007/s11708-008-0007-4

Aerodynamic design by jointly applying S2 flow surface calculation and modern optimization methods on multistage axial turbine

Academy of Energy Science and Engineering, Harbin Institute of Technology

发布日期： 2008-03-05

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摘要

A three-stage axial turbine was redesigned by jointly applying S2 flow surface direct problem calculation methods and multistage local optimization methods. A genetic algorithm and artificial neural network were jointly adopted during optimization. A three-dimensional viscosity Navier–Stokes equation solver was applied for flow computation. H-O-H-topology grid was adopted as computation grid, that is, an H-topology grid was adopted for inlet and outlet segment, whereas an O-topology grid was adopted for stator zone and rotor zone. Through the optimization design, the total efficiency increases 1.1%, thus indicating that the total performance is improved and the design objective is achieved.