Research on an Arc Air-Lubricating Oil Radiator Equipped in Internal Surface of Air Intake for the Aero Engine  

作　　者：CAI Huikun WENG Zeju LIAO Yidai GU Kaixuan WANG Junjie 

机构地区：[1]Department of Mechanical and Electronic Engineering of Xiamen University,Xiamen University,Xiamen 361102,China [2]CAS Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry of the Chinese Acadermy of Sciences,Bejing 100190,China

出　　处：《Journal of Thermal Science》2020年第3期687-696,共10页热科学学报（英文版）

基　　金：supported by the Natural Science Foundation of Fujian Province of China(Grant No.2018D0018);CAS Key Laboratory of Cryogenics,TIPC(Grant No.CRYO201708)。

摘　　要：Due to huge-power aircraft development and more electronic devices applied onboard,high heat flow density and uneven thermal distribution are becoming new problems.One new try is adding an air-lubricating oil radiator as the secondary cooling component but there are still few reports on its research.Therefore,this paper proposes a newly-design plate-fin air-lubricating oil radiator different from tube-fin or shell-tube conventionally used in previous engine system.This radiator is arc,and equipped in internal surface of air intake.Numerical and experimental analyses were carried out on fin performance.Their results agreed well with average error of 13%on thermal resistance.Then heat and flow behaviors of oil side were presented with different structures and sizes of flowing passage.According to all research,optimized radiator is gained with fin spacing of 3.76 mm,fin thickness of 2 mm,single flowing path with width of 13 mm and gradient inlet and outlet.Its heat dissipation of 28.35 k W and pressure loss of 2.2 MPa can meet actual working requirements.The research proves an air-lubricating oil radiator with arc structure and layout mode of internal surface to be feasible,which is a new but efficient cooling scheme and can lead to an innovative but wide use in modern aircrafts.

关 键 词：aero engine air-lubricating oil radiator arc plate-fin radiator oil flowing path internal surface of air intake 

分 类 号：V23[航空宇航科学与技术—航空宇航推进理论与工程]