English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26988/38789
Visitors : 2342139      Online Users : 36
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46892

Title: Numerical and Experimental Study of Natural Convection Heat Transfer Characteristics for Vertical Annular Finned Tube Heat Exchangers
Authors: Han-TawChen;Yu-JieChiu;Chein-ShanLiu;Jiang-RenChang
Contributors: 國立臺灣海洋大學:系統工程暨造船學系
Keywords: New correlationsl;CFD along with inverse method;Natural convection;Finned tube
Date: 2017
Issue Date: 2018-06-08T08:16:43Z
Publisher: International Journal of Heat and Mass Transfer
Abstract: Abstract:This study uses three-dimensional computational fluid dynamics (CFD) commercial package along with the inverse method and experimental data to investigate the natural convection heat transfer and fluid flow characteristics of the single-tube vertical annular finned tube heat exchanger for various values of fin spacing and tube diameter. The air temperature and velocity distributions, the fin surface temperature and the heat transfer coefficient on the fins are determined by the FLUENT along with various flow models in the box with the upward opening. The inverse method along with the finite difference method and the experimental temperature data is applied to determine the fin temperature and heat transfer coefficient for the smaller tube. More accurate results are obtained by the appropriate flow model, if the heat transfer coefficient obtained is close to the inverse results and matches existing correlations. The fin temperature obtained at the selected measurement locations coincides with the experimental data. The results show that the zero-equation turbulence model is more suitable for this problem than laminar and RNG k-ε turbulence models. The grid independence assumption cannot be appropriate. The proposed correlations between the Nusselt number and the Rayleigh number are close to FLUENT and inverse results.
Relation: 109 pp.378-392
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46892
Appears in Collections:[系統工程暨造船學系] 期刊論文

Files in This Item:

There are no files associated with this item.



All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback