ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
Heat Transfer Research
インパクトファクター: 1.199 5年インパクトファクター: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561

巻:
巻 51, 2020 巻 50, 2019 巻 49, 2018 巻 48, 2017 巻 47, 2016 巻 46, 2015 巻 45, 2014 巻 44, 2013 巻 43, 2012 巻 42, 2011 巻 41, 2010 巻 40, 2009 巻 39, 2008 巻 38, 2007 巻 37, 2006 巻 36, 2005 巻 35, 2004 巻 34, 2003 巻 33, 2002 巻 32, 2001 巻 31, 2000 巻 30, 1999 巻 29, 1998 巻 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2015010730
pages 141-155

NUMERICAL SIMULATION OF LAMINAR FILM CONDENSATION OF VAPOR IN A HORIZONTAL MINICHANNEL WITH AND WITHOUT A NONCONDENSABLE GAS

Zhan Yin
Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R. China
Jianjun Wen
Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
Min Zeng
Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
Qiu-Wang Wang
Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R. China

要約

A steady two-dimensional volume of fluid (VOF) simulation of laminar film condensation of vapor with and without a noncondensable gas inside a 1-mm horizontal minichannel is presented. The uniform interface temperature and wall temperature are fixed as boundary conditions, and the flow pattern is expected to be annular. The numerical simulation results display the evolution of the liquid−gas interface, Nu, and heat flux. It is found that the global effect of gravity is negligible. Moving downstream the minichannel, the liquid film grows rapidly near the entrance and then remains unchanged in the rest of the minichannel till the end. Higher inlet velocity and wall temperature of the minichannel lead to the augmentation of the average Nu value of condensation. The existence of a noncondensable gas makes the heat flux to decrease sharply compared to that vapor condensation, while a higher inlet velocity will aggravate this effect. Meanwhile, the noncondensable gas with smaller thermal conductivity would give rise to greater reduction of heat flux as a result of the higher thermal resistance in the noncondensable gas layer.


Articles with similar content:

Radiative Effects on Non-Darcy Natural Convection from a Heated Vertical Plate in Saturated Porous Media with Mass Transfer for Non-Newtonian Fluid
Journal of Porous Media, Vol.12, 2009, issue 1
M. A. EL-Hakiem
EXPERIMENTAL STUDY ON CONDENSATION HEAT TRANSFER OF STEAM IN HORIZONTAL TUBE
3rd Thermal and Fluids Engineering Conference (TFEC), Vol.17, 2018, issue
Yaoxuan Wang, Weihao Chen, Shengqiang Shen, Xingsen Mu
CFD Simulations of The Impact of Radiation on Thermocouple Measurement of Hot Gas Jets
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2012, issue
Sassan Etemad
LOCAL HEAT/MASS TRANSFER CHARACTERISTICS IN THE BOUNDARY LAYER OF A WAVY SURFACE
International Heat Transfer Conference 13, Vol.0, 2006, issue
J.-H. Park, S.-Y. Yoo, Hwa-Kil Kwon
INFLUENCE OF NONCONDENSABLE GAS TO CONDENSATION OF WATER IN A NANOSCALE SPACE USING MOLECULAR DYNAMICS SIMULATION
Journal of Enhanced Heat Transfer, Vol.27, 2020, issue 1
Xiaoze Du, Li Li