Aerodynamic shape optimization of a transonic fan by an adjoint-response   surface method

doi:10.1016/j.ast.2017.05.005

CORC > 北京大学 > 工学院

	Aerodynamic shape optimization of a transonic fan by an adjoint-response surface method
	Tang, Xiao ; Luo, Jiaqi ; Liu, Feng
刊名	AEROSPACE SCIENCE AND TECHNOLOGY
	2017
关键词	Aerodynamic design optimization Adjoint method Response surface Compressor rotor Transonic AXIAL COMPRESSOR ROTOR FLOW PERFORMANCE DESIGN BLADE SWEEP
DOI	10.1016/j.ast.2017.05.005
英文摘要	An adjoint-response surface method is developed to provide efficient surrogate model in a parametrized design space for aerodynamic optimization of turbomachinery blades. Our goal is to improve the adiabatic efficiency or equivalently reduce the entropy generation through blade row with a mass flow rate constraint. Firstly, an aerodynamic sensitivity analysis is conducted with a viscous adjoint method to find the suitable number of control points on the suction surface of the transonic NASA rotor 67. Then quadratic polynomial (QP) based response surfaces of 4, 6 and 8 parameters are examined to validate the advantages of the gradient-enhanced model. In the following 24-parameter aerodynamic design optimization case, a steepest descent optimization (SDO) based on adjoint gradient is, conducted, then QP based response surface model is constructed using both the values of cost function and its adjoint gradients with respect to geometry control parameters. We present the geometric features, overall aerodynamic improvements and flow details of optimal designs given by SDO and gradient-enhanced response surface model (GERSM). The effects of blade reshaping on shock system, tip clearance flow and flow separation at hub are examined. Also, off-design performances are analyzed regarding both adiabatic efficiency and stall margin. (C) 2017 Elsevier Masson SAS. All rights reserved.; National Natural Science Foundation of China [51376009, 51676003]; SCI(E); ARTICLE; 26-36; 68
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/471277]
专题	工学院
推荐引用方式 GB/T 7714	Tang, Xiao,Luo, Jiaqi,Liu, Feng. Aerodynamic shape optimization of a transonic fan by an adjoint-response surface method[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2017.
APA	Tang, Xiao,Luo, Jiaqi,&Liu, Feng.(2017).Aerodynamic shape optimization of a transonic fan by an adjoint-response surface method.AEROSPACE SCIENCE AND TECHNOLOGY.
MLA	Tang, Xiao,et al."Aerodynamic shape optimization of a transonic fan by an adjoint-response surface method".AEROSPACE SCIENCE AND TECHNOLOGY (2017).