Bubble Dynamics of Water Boiling Heat Transfer in Vertical Rectangular Mini-Channel

您当前的位置：

首页 >

文章列表页 >

Bubble Dynamics of Water Boiling Heat Transfer in Vertical Rectangular Mini-Channel

更新时间：2025-07-09

- Bubble Dynamics of Water Boiling Heat Transfer in Vertical Rectangular Mini-Channel
- Vol. 44, Issue 11, Pages: 12-16+32(2010)
- 作者机构：
  
  山东大学热科学与工程研究中心,济南,250061
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK124
- Online First：10 November 2010，
  
  Published：2010
- 稿件说明：
移动端阅览
Bubble Dynamics of Water Boiling Heat Transfer in Vertical Rectangular Mini-Channel[J]. 2010, 44(11): 12-16+32.
DOI：

Bubble Dynamics of Water Boiling Heat Transfer in Vertical Rectangular Mini-Channel[J]. 2010, 44(11): 12-16+32. DOI：

摘要

为加深对狭缝通道内水沸腾换热机理的探索

对宽度为2 mm、长度为300 mm的竖直狭缝通道内水沸腾气泡动力学展开研究

通过数值模拟的方法探索气泡生成、长大和脱离的过程

分析了壁面过热度、泡底微层的运动对沸腾换热的影响

并与实验数据进行了对比.数值计算中考虑了重力、表面张力和壁面黏附作用.研究结果表明:表面张力在细通道沸腾换热过程中所起的作用要远远大于重力; 壁面过热度越高

气泡脱离直径越大; 随着加热时间的增加

气泡直径d不断增大

当d≥1.5 mm时

就会受到来流的影响而发生形变; 泡底微层的存在加速了壁面对流

对换热系数的提高有一定作用; 数值模拟结果与实验数据吻合良好.

Abstract

Boiling heat transfer in a vertical rectangular mini-channel 2 mm in breadth and 300 mm in length was investigated to further understand the mechanism of water boiling heat transfer in narrow channels. The numerical simulation was performed to explore the course of bubble generation

growth and departure and analyze the influence of the superheat degree of wall surfaces and the movement of phase interfaces on boiling heat transfer. The gravity

surface tension and wall adhesion were considered in the calculation

and the calculation results were compared with the experimental data. The results show that surface tension is much more important than gravity in the process of boiling heat transfer. The departure diameter of bubbles increases significantly with an increase in the superheat degree. When the bubble diameter is larger than 1.5 mm

it will be influenced by incoming flow. In addition

the simulation results agree well with the experimental data.

关键词

Keywords

references

ISHIBASHI E, NISHIKAWA K. Saturated boiling heat transfer in narrow spaces[J]. International Journal of Heat and Mass Transfer, 1969, 12(8):863-894.

WAMBSGANSS M W, FRANCE D M, JENDRZEJCZYK J A, et al. Boiling heat transfer in a small diameter tube[J]. Journal of Heat Transfer, 1992, 115(4):963-972.

BOWERS M B, MUDAWAR I. High flux boiling in low flow rate, low pressure drop mini-channel and micro-channel heat sinks[J]. International Journal of Heat and Mass Transfer, 1994,37(2):321-332.

SUO M, GRIFFITH P. Two-phase flow in capillary tubes[J]. Journal of Basic Engineering, 1964, 86(3):576-582.

MISHIMA K, HIBIKI T. Some characteristics of air-water two-phase flow in small diameter vertical tubes[J]. International Journal of Multiphase Flow, 1996, 22(4):703-712.

陈二锋, 厉彦忠, 王斯民. 竖直环管内低压水过冷沸腾数值模拟[J]. 西安交通大学学报, 2008, 42(7):855-859.

CHEN Erfeng, LI Yanzhong, WANG Simin. Numerical simulation of subcooled boiling water in vertical concentric annulus under low pressure[J]. Journal of Xi'an Jiaotong University, 2008, 42(7):855-859.

吴鸽平, 吴埃敏, 郭赟, 等. 环形窄缝通道内流动沸腾干涸点的研究[J]. 西安交通大学学报, 2004, 38(7):686-689.

WU Geping, WU Aimin, GUO Yun, et al. Experimental research on dryout point of flow boiling in narrow annular channel[J]. Journal of Xi'an Jiaotong University, 2004, 38(7):686-689.

WAMBSGANSS M W, JENDRZEJCZYK J A, FRANCE D M. Determination and characteristics of the transition to two-phase slug flow in small horizontal channels[J]. Journal of Fluids Engineering, 1994, 116(1):140-146.

YANG C Y, SHIEH C C. Flow pattern of air-water and two-phase R134a in small circular tubes[J]. International Journal of Multiphase Flow, 2001, 27(7):1163-1177.

COLEMAN J W, GARIMELLA S. Characterization of two-phase flow patterns in small diameter round and rectangular tubes[J]. International Journal of Heat and Mass Transfer, 1999, 42(15):2869-2881.

陈德奇, 潘良明, 袁德文, 等. 竖直矩形窄流道内汽泡生长的实验研究[J]. 核动力工程, 2008, 29(5):52-55.

CHEN Deqi, PAN Liangming, YUAN Dewen, et al. Experimental study on bubble growth in vertical narrow channel[J]. Nuclear Power Engineering, 2008, 29(5):52-55.

林瑞泰. 沸腾换热[M]. 北京: 科学出版社, 1988.

王新平, 陈志方, 沈之荃. 高分子表面动态行为与接触角时间依赖性[J]. 中国科学: B辑, 2005, 35(1):64-69.

TALEBI S, ABBASI F, DAVILU H. A 2D numerical simulation of sub-cooled flow boiling at low-perssure and low-flow rates[J]. Nuclear Engineering and Design, 2009, 239(1):140-146.

哈恩 E, 格里古尔 U. 沸腾换热[M]. 王兴国, 等译. 北京: 国防工业出版社, 1988.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical Simulation of Convective Heat Transfer in Metal Foam Filled Pipes

Study of the Mechanism of Electrostatic Accumulation and Current Density Distribution Characteristics During Liquid Hydrogen Pipeline Transportation

Numerical Simulation of Space Charge Distribution Characteristics of Polyimide Materials under X-Ray Irradiation

Numerical Simulation Study on Geothermal Extraction Characteristics of Supercritical CO2 in Heterogeneous Fractures

Action Mechanism of Heat Transfer between the Working Medium and the Impeller on Aerodynamic Performance and Flow Characteristics of Radial Inflow Turbines with Supercritical Carbon Dioxide

Related Author

李盈海 1

陶文铨 1

孙东亮 1

赵长颖 1

SUN Wenhao

LIU Hongbao

WANG Lei

Related Institution

西安交通大学动力工程多相流国家重点实验室

天华化工机械及自动化研究设计院

School of Energy and Power Engineering，Xi’an Jiaotong University

Aerospace System Engineering Shanghai

School of Electrical Engineering，Xi’an Jiaotong University

⁰