LOCAL ENHANCEMENT OF HEAT-TRANSFER IN A PARTICULATE CROSS-FLOW .1. HEAT-TRANSFER MECHANISMS

被引：30

作者：

MURRAY, DB

机构：

[1] Department of Mechanical Engineering, Trinity College, University of Dublin, Dublin

来源：

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW | 1994年 / 20卷 / 03期

关键词：

GAS-PARTICLE CROSS FLOW; HEAT TRANSFER ENHANCEMENT; PARTICLE REBOUNDS; INCREASED THERMAL CAPACITY; TURBULENCE MODIFICATION;

D O I：

10.1016/0301-9322(94)90023-X

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The mechanisms associated with the enhancement of heat transfer over the front of a tube in a gas-particle cross flow are investigated. A correlation derived in a previous study of enhancement from the increased thermal capacity of the suspension is modified to take account of local particle residence times and the calculations of gas-to-particle heat transfer are refined. The influence on the enhancement of conduction between an impacting particle and the tube wall is analysed and the correlation is modified to include the effect of energy transport by rebounding particles. In addition, the effects of changes in the ps flow structure and boundary-layer characteristics on local heat transfer are explored.

引用

页码：493 / 504

页数：12

共 25 条

[1]

DEPEW CA, 1972, ADV HEAT TRANSFER, V9, P113

[2]

DYBAN E, 1970, 4TH P INT HEAT TRANS, V2

[3]

ECKERT ERG, 1959, HEAT MASS TRANSFER, pA7502

[4]

FITZPATRICK JA, 1992, EXP FLUIDS, V12, P329, DOI 10.1007/BF00187311