Numerical study of recovery effect and impingement heat transfer with submerged circular jets of large Prandtl number liquid

被引：15

作者：

Lee, XC ^{[1
]}

Ma, CF ^{[1
]}

Zheng, Q ^{[1
]}

Zhuang, Y ^{[1
]}

Tian, YQ ^{[1
]}

机构：

[1] BEIJING POLYTECH UNIV,DEPT THERMAL SCI & ENGN,BEIJING 100022,PEOPLES R CHINA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1997年 / 40卷 / 11期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/S0017-9310(96)00263-3

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A numerical study was conducted to characterize the thermal behavior of laminar circular liquid jets. The main goal of this work was to clarify the significant recovery effect of large Prandtl number liquid jets reported by the present authors. Radial distribution of local recovery factor was studied in numerical detail. The effects of many factors were investigated including Reynolds number, Prandtl number, nozzle-to-plate spacing, jet velocity, nozzle diameter and velocity profile at nozzle exit. Very large recovery factors over 20 were obtained with high Prandtl number fluid jets at medium velocity. The results exhibited good agreement with the experimental data by the present authors, verifying the great significance of recovery effect with large Prandtl number liquid jets. (C) 1997 Elsevier Science Ltd.

引用

页码：2647 / 2653

页数：7

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