Film cooling performance and flow structure of single-hole and double-holes with swirling jet

作     者：Rui ZHU Simon TERRENCE Shulei LI Gongnan XIE Rui ZHU;Simon TERRENCE;Shulei LI;Gongnan XIE

作者机构：School of Mechanical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Research&Development Institute of Northwestern Polytechnical University in ShenzhenShenzhen 518057China Department of Mechanical EngineeringUniversity of MinnesotaMinneapolisMN 55455USA School of Marine Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710072China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2022年第35卷第3期

页      面：201-213页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：supported by Guangdong Basic and Applied Basic Research Foundation,China(No.2019A1515111146) the Fundamental Research Funds for the Central Universities,China(No.3102020HHZY030005) the Natural Science Basic Research Plan in Shaanxi Province of China(No.2021JQ-104) the National Natural Science Foundation of China(No.51676163) the National 111 Project,China(No.B18041) 

主　　题：Combined-hole Film cooling Interactions of vortices Jet-in-cross-flow Swirling flow 

摘      要：This paper presents the results of a numerical study of the effects of swirling flow in coolant jets on film cooling *** combined-hole designs with swirling coolant flow entering the delivery hole are proposed and *** film cooling effectiveness values for cases with various blowing ratios are *** flow structures and underlying mechanisms are *** results show that film cooling effectiveness is improved with jet swirl at high blowing ratios,and that swirl strength has significant influence on film cooling ***-hole designs can further improve film cooling performance using swirling jets due to mixing of coolant flows and interaction of *** largest improvements of area-averaged film cooling effectiveness for a single-hole swirl case and a combined-hole swirl case over corresponding non-swirling case results are 157%and 173%,respectively.