每年出版 8 期
ISSN 打印: 1065-5131
ISSN 在线: 1563-5074
Indexed in
INFLUENCE OF PITCH ON LOCAL HEAT TRANSFER DISTRIBUTION FOR CONFINED IMPINGEMENT OF MULTIPLE JET ARRAYS
摘要
Experimental investigations are carried out to study the influence of spanwise pitch and streamwise pitch on the local heat transfer distribution due to arrays of multiple impinging jets on a surface parallel to the jet plate. The spent air exits in all directions from the confined passage. The length-to-diameter ratio of the nozzles of the jet plate is 1.0. The mean jet Reynolds numbers based on the nozzle exit diameters (d) of 3000, 5000, 7500, and 10000 and jet-to-plate distances of d, 2d, and 3d are considered for all of the configurations. The local and average Nusselt number distributions are presented for all of the configurations covered in the present study. An optimum configuration is suggested on the basis of minimizing the mass flow rate of the coolant per unit area of cooled surface. Correlations are developed for the average Nusselt number and the coefficient of variance of the Nusselt number in terms of flow and geometric parameters.
-
Huang Tianlun, Tan Penghui, Zhang Yun, Huang Zhigao, Zhou Huamin, Heat transfer uniformity analysis of floatation nozzle using a revised uniformity indicator, International Journal of Heat and Mass Transfer, 168, 2021. Crossref
-
Wen Zhe-Xi, He Ya-Ling, Cao Xue-Wei, Yan Chao, Numerical study of impinging jets heat transfer with different nozzle geometries and arrangements for a ground fast cooling simulation device, International Journal of Heat and Mass Transfer, 95, 2016. Crossref