Heat and Mass Transfer Characteristics and Stability of Capillary Evaporating Meniscus

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Heat and Mass Transfer Characteristics and Stability of Capillary Evaporating Meniscus

更新时间：2025-05-01

- Heat and Mass Transfer Characteristics and Stability of Capillary Evaporating Meniscus
- Vol. 44, Issue 3, Pages: 21-25(2010)
- 作者机构：
  
  华中科技大学能源与动力工程学院,武汉,430074
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK124
- Online First：10 March 2010，
  
  Published：2010
- 稿件说明：
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Heat and Mass Transfer Characteristics and Stability of Capillary Evaporating Meniscus[J]. 2010, 44(3): 21-25.
DOI：

Heat and Mass Transfer Characteristics and Stability of Capillary Evaporating Meniscus[J]. 2010, 44(3): 21-25. DOI：

摘要

在基于增广杨拉普拉斯方程及Wayner界面传质方程的蒸发毛细弯液面薄膜区热质传输模型的基础上

利用数值计算分析方法

讨论了系统运行参数、几何参数、工质物性参数对界面热质传输能力和稳定性的影响.结果表明:高过热度和高弯液面温度下

弯液面具有较强的热传输能力

但稳定性下降; 毛细通道几何参数对界面热质传输的影响较小

而选择不同的工质其界面热质传输特征会有较大差异.相对而言

高热质传输能力对应了较低的界面稳定性

故在毛细抽吸两相回路的设计中需综合考虑二者的关系.

Abstract

From the augment Young-Laplace equation and the Wayner's interface mass flux equation

the influence of system operating parameters

geometry parameters and working fluid properties on the heat and mass transfer of an evaporating meniscus

as well as its stability

was investigated using the numerical analysis on a thin-film heat and mass transfer model in the present work. The results show that the meniscus with higher superheat degree or higher meniscus temperature has a greater capability of heat and mass transfer

but its stability is lower. The influence of geometry parameters on interface heat and transfer is slight while the effect of working fluid properties is significant. Generally

higher heat and mass transfer capability occurs along with lower stability

which should be carefully considered in the design of a capillary pumped loop system.

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references

HOLM F W,GOPLEN S P. Heat transfer in the meniscus thin film region[J]. ASME J of Heat Transfer, 1979,101(2):498-503.

BURELBACH J P, BANKOFF S G, DAVIS S H. Nonlinear stability of evaporating/condensing liquid films [J]. J Fluid Mech, 1988, 195: 463-494.

WAYNER P C Jr,KAO Y K. The interline heat transfer coefficient of an evaporating wetting film[J]. Int J Heat Mass Transfer,1976,19(2): 487-492.

WANG H, GARIMELLA S V. Characteristics of an evaporating thin film in a microchannel[J]. Int J Heat Mass Transfer, 2007,50(1/2):163-172.

WEE S K, KIHM K D. Effects of the liquid polarity and the wall slip on the heat and mass transport characteristics of the micro-scale evaporating transition film[J]. Int J Heat Mass Transfer, 2005, 48(2): 265-278.

SWANSON L W, HERDT G C. Model of the evaporating meniscus in a capillary tube[J]. ASME J of Heat Transfer, 1992, 114(2): 434-441.

LAID D A, KEHIAIAN H V. CRC handbook of thermophysical and thermochemical data[M]. New York, USA:CRC Press, 2007.

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