Numerical simulation of natural convection in rectangular cavities with a heater of variable dimension

ZHANG Min; YAN Gang; TAO Kai

您当前的位置：

首页 >

文章列表页 >

Numerical simulation of natural convection in rectangular cavities with a heater of variable dimension

更新时间：2025-12-10

- Numerical simulation of natural convection in rectangular cavities with a heater of variable dimension
- CIESC Journal Issue 6, Pages: 1373-1378(2010)
- 作者机构：
  
  西安交通大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 June 2010，
  
  Published：05 June 2010
- 稿件说明：
移动端阅览
ZHANG Min, YAN Gang, TAO Kai. Numerical simulation of natural convection in rectangular cavities with a heater of variable dimension[J]. CIESC Journal, 2010, (6): 1373-1378.
DOI：

ZHANG Min, YAN Gang, TAO Kai. Numerical simulation of natural convection in rectangular cavities with a heater of variable dimension[J]. CIESC Journal, 2010, (6): 1373-1378. DOI：

摘要

对底部中心位置具有不同大小内热源的二维封闭方腔自然对流换热问题进行了数值模拟。通过改变内热源量纲1高度b和Rayleigh数的大小，分析了不同工况对封闭方腔内温度场、流场结构和热源表面平均Nusselt数的影响。数值模拟结果表明：b和Ra的大小对封闭方腔内空气的流动换热有着重要影响;热源表面Nuave是Ra和b的增函数，且其增幅随Ra的增加而增加，随b的增加而减小。

Abstract

A numerical simulation of natural convection was conducted in the middle of a rectangular cavity with a heater of variable dimension.Analyses on isotherms

streamlines and average Nusselt number in the rectangular cavity were carried out by varying the values of dimensionless height b and Rayleigh number.The simulation results show that b and Ra have a great effect on the natural convection in the rectangular cavity.Nuave grows with the increase of b and Ra

and the growth rate is proportional to Ra and inversely proportional to b.

关键词

Keywords

references

Views

688

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

含内热源的梯形腔自然对流换热数值模拟

Simulation of supercritical CO2 extraction of clove oil by two-step diffusion model

低流量微管末端液滴形成及破碎的数值模拟

Numerical simulation of effect of shear perturbations on rheology behavior of liquid crystalline polymers

Simulation and assessment on leakage hazard from gas sweetening unit of sour gas processing plant in complex terrain

Related Author

张敏

陶锴

晏刚

LIU Naihui

LI Shufen

GUAN Wenqiang

贺丽萍

夏振炎

Related Institution

天津大学化工学院，教育部绿色合成与转化重点实验室

南开大学化学学院

国家农产品保鲜工程技术研究中心

1天津大学力学系

天津市现代工程力学重点实验室

⁰