MECHANICS OF ENHANCEMENT OF CONVECTIVE HEAT TRANSFER DUE TO PARTICLE IMPACT IN GAS-SOLID TWO-PHASE FLOW

GaoXiang; Zhou jinsong; Luo Zhongyang; Chen Yafei; Cen Kefa(Institute for Thermal Power Engineering

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MECHANICS OF ENHANCEMENT OF CONVECTIVE HEAT TRANSFER DUE TO PARTICLE IMPACT IN GAS-SOLID TWO-PHASE FLOW

更新时间：2025-12-16

- MECHANICS OF ENHANCEMENT OF CONVECTIVE HEAT TRANSFER DUE TO PARTICLE IMPACT IN GAS-SOLID TWO-PHASE FLOW
- CIESC Journal Issue 3, (1998)
- 作者机构：
  
  浙江大学热能工程研究所!杭州310027,浙江大学热能工程研究所!杭州310027,浙江大学热能工程研究所!杭州310027,浙江大学热能工程研究所!杭州310027,浙江大学热能工程研究所,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q021
- Online First：25 June 1998，
  
  Published：25 June 1998
- 稿件说明：
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GaoXiang, Zhou jinsong, Luo Zhongyang, et al. MECHANICS OF ENHANCEMENT OF CONVECTIVE HEAT TRANSFER DUE TO PARTICLE IMPACT IN GAS-SOLID TWO-PHASE FLOW[J]. CIESC Journal, 1998, (3).
DOI：

GaoXiang, Zhou jinsong, Luo Zhongyang, et al. MECHANICS OF ENHANCEMENT OF CONVECTIVE HEAT TRANSFER DUE TO PARTICLE IMPACT IN GAS-SOLID TWO-PHASE FLOW[J]. CIESC Journal, 1998, (3). DOI：

摘要

提出了颗粒碰撞壁面过程中颗粒打破边界层和颗粒与壁面导热的强化传热模型，以分析气固两相流中颗粒强化对流传热的机理，通过模型计算研究了风速、颗粒浓度和粒径等因素对颗粒在壁面的停留特性、颗粒在边界层的扰动及对导热和边界层破坏两种强化机制传热比重的影响．以气固两相流横掠圆管的传热过程为例进行计算，计算与实验结果一致，并获得了具有实用价值的关联计算式．

Abstract

A mechanistic model is presented to describe the enhancement of convective heat transfer due to particle impact in gas-solid two-phase flow.In order to analyze the heat transfer enhancement mechanism

the boundary layer charcteristics and the heat conduction between particle and heated surface during particle impactive process are both taken into account in this model.Effects of gas velocity

particle concentration and particle size on particle residence characteristic

boundary layer characteristics and h_(c2)/h_(conp) are investigated by means of model calculation.In addition

the enhancement of heat transfer in gas-solid flow predicted by this model have been compared with experimental results and a good agreement is observed.Finally

a correlation equation for heat transfer enhancement of gas-solid cross flow in a tube is presented.

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