具有质热源的方腔内对流传热传质及其非线性特性

李钰冰; 杨茉; 陆廷康; 戴正华

doi:10.11949/0438-1157.20190530

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具有质热源的方腔内对流传热传质及其非线性特性

流体力学与传递现象 | 更新时间：2020-06-24

- 具有质热源的方腔内对流传热传质及其非线性特性
- Study on heat and mass transfer and nonlinear characteristics with heat and mass source in cavity
- 化工学报 2019年70卷第S2期页码：130-137
- 作者机构：
  
  1.上海理工大学能源与动力工程学院，上海 200093
  2.上海市浦东新区特种设备监督检测所，上海 200136
- 作者简介：
  
  李钰冰(1991—)，女，博士研究生，lybusst@163.com
  杨茉(1958—)，男，博士，教授，yangm@usst.edu,cn
- 基金信息：
  
  国家自然科学基金项目(51736007;51476103);上海市质量技术监督局科研项目(2018-54)
- DOI：10.11949/0438-1157.20190530
  中图分类号： TK 124
- 收稿：2019-05-16，
  
  修回：2019-06-20，
  
  纸质出版：2019-09-05
- 稿件说明：
移动端阅览
李钰冰, 杨茉, 陆廷康, 戴正华. 具有质热源的方腔内对流传热传质及其非线性特性[J]. 化工学报, 2019, 70(S2): 130-137

LI Yubing, YANG Mo, LU Tingkang, DAI Zhenghua. Study on heat and mass transfer and nonlinear characteristics with heat and mass source in cavity[J]. CIESC Journal, 2019, 70(S2): 130-137
李钰冰, 杨茉, 陆廷康, 戴正华. 具有质热源的方腔内对流传热传质及其非线性特性[J]. 化工学报, 2019, 70(S2): 130-137 DOI： 10.11949/0438-1157.20190530.

LI Yubing, YANG Mo, LU Tingkang, DAI Zhenghua. Study on heat and mass transfer and nonlinear characteristics with heat and mass source in cavity[J]. CIESC Journal, 2019, 70(S2): 130-137 DOI： 10.11949/0438-1157.20190530.

摘要

以火灾为背景，对一个带有质热源的方腔进行了研究。针对不同

，浮升力比

，

和

，探讨了腔内流体的传热传质规律及其非线性特性。结果表明，存在临界

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=816685&type=

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=816684&type=

4.57200003

3.21733332

使流体流动由导热驱动流动转变为对流驱动流动，随着

增大质热源表面传热传质强度增加，流体由稳态流动转为振荡流动。当

-1时，对流传热系数和对流传质系数增大，流体由稳态转化为倍周期振荡，最后转化为混沌。增大

和

可增强传热传质能力。

Abstract

In this paper

a square cavity with mass and heat source was studied with the background of fire. According to the different Rayleigh number(

) and buoyance ratio

and

the heat and mass transfer law and nonlinear characteristics of the fluid in the cavity are discussed. The results show that the critical

causes the fluid flow to change from the heat-induced driving flow to the convection-driven flow. As

increases the heat and mass transfer of the surface of the heat and mass source

the fluid changes from steady-state flow to oscillating state. When

-1

the convective heat transfer coefficient and the convective mass transfer coefficient increase

and the fluid transforms from steady state to double-period oscillation

and finally to chaos. Increasing

and

can increase flow and heat and mass transfer.

关键词

Keywords

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