VELOCITY-FIELD AND HEAT-TRANSFER IN A VORTEX FLOW EXCHANGER

被引：5

作者：

DEVIENNE, R ^{[1
]}

COGNET, G ^{[1
]}

机构：

[1] ECOLE NATL SUPER ELECT & MECAN,INST NATL POLYTECH LORRAINE,ENERGET & MECAN THEOR & APPL LAB,F-54011 NANCY,FRANCE

来源：

WARME UND STOFFUBERTRAGUNG-THERMO AND FLUID DYNAMICS | 1990年 / 25卷 / 03期

关键词：

D O I：

10.1007/BF01590150

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This study deals with the flow of newtonian and non-newtonian fluids, inside a cylindrical flat cavity, provided with a tangential injection device, model of heat exchangers with spiral flow. The dynamic analysis which requires essentially a laser Doppler velocimeter focusses on the determination of the velocity field and brings out the existence of secondary flows which are important for heat transfer. In turbulent regime, the law of exchange agrees with the Chilton-Colburn analogy. On the other hand, for laminar flow, it becomes necessary to include the variations with temperature of the consistency (K); the Nusselt number (Nu) not only depends on the flow rate, but also on the density of transferred heat flux. © 1990 Springer-Verlag.

引用

页码：185 / 191

页数：7

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