冲击粗糙肋壁面换热准则关系式的建立

推进技术 ›› 2002, Vol. 23 ›› Issue (3): 237-239.

冲击粗糙肋壁面换热准则关系式的建立

张净玉,常海萍

南京航空航天大学能源与动力学院江苏南京210016;南京航空航天大学能源与动力学院江苏南京210016

发布日期:2021-08-15

Establishment of correlation equation about impingement heat transfer from rib roughened surface within arrays of circular jets

Coll of Energy and Power,Nanjing Univ of Aeronautics and Astronautics,Nanjing 210016,China;Coll of Energy and Power,Nanjing Univ of Aeronautics and Astronautics,Nanjing 210016,China

Published:2021-08-15

摘要/Abstract

摘要： 模拟高性能航空发动机涡轮叶片弦中区冷却结构 ,建立冲击粗糙复合冷却实验模型。通过对大量实验数据的分析和整理 ,建立了换热准则关系式。与实验结果对比表明 :该准则关系式与实验实测数据吻合较好 ,精度较高 ,对于冲击粗糙肋壁面复合冷却技术的研究和工程结构设计都具有一定的指导价值

关键词: 喷射冲击;传热;涡轮叶片;航空发动机

Abstract: The process of impingement heat transfer is quite complicated , especially when the target surface is rib roughened Based on thousands of experimental data in different parameter matching conditions, the correlation of the impingement heat transfer characteristics was analyzed The correlation equation of impingement heat transfer characteristics to the parameters was finally concluded Comparison shows that the correlation results are in good agreement with the experimental data

Key words: Jet impingement;Heat transfer;Turbine blade;Aircraft engine

张净玉,常海萍. 冲击粗糙肋壁面换热准则关系式的建立[J]. 推进技术, 2002, 23(3): 237-239.