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Flow and heat transfer in metal foam filled pipes under two extended Darcy models
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Tian, Y. (Yuan), Zhao, Changying, Li, Zeng-Yao and Qu, Zhi-Guo (2008) Flow and heat transfer in metal foam filled pipes under two extended Darcy models. Journal of Engineering Thermophysics, Vol.29 (No.8). pp. 1380-1382.
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Official URL: http://jetp.iet.cn/EN/Y2008/V29/I8/1380
Abstract
The flow and heat transfer in pipes filled with metal foams were studied numerically.In this study,the two-equation model based on LNTE (Local Non-Thermal equilibrium) was employed as energy equations,furthermore the flow models extended by Brinkman and Brinkman-Forchheimer were employed as momentum equations respectively,and a comparison between these two models was made and analysed.The numerical results indicate that the velocity profiles under two models are different,but their temperature profiles are almost the same as each other,consequently,there are barely differences between the Nu numbers under two models.According to numerical results,the Nu number of metal-foam filled pipes is of the order of magnitude of 102～103,which is much bigger than that of bare pipes and conventional heat exchangers.The metal-foam filled pipes exhibit excellent heat transfer performance,however high pressure drop is produced at the same time.By using the program for heat transfer calculation of metal foam that is developed by us,someone can make optimization of heat transfer and pressure drop in practical applications.
| Item Type: | Journal Article | ||||
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| Subjects: | Q Science > QC Physics T Technology > TP Chemical technology |
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| Divisions: | Faculty of Science > Engineering | ||||
| Library of Congress Subject Headings (LCSH): | Heat -- Transmission -- Mathematical models, Metal foams -- Mathematical models | ||||
| Journal or Publication Title: | Journal of Engineering Thermophysics | ||||
| Publisher: | Institute of Engineering Thermophysics, Chinese Academy of Sciences | ||||
| ISSN: | 0253-231X | ||||
| Official Date: | August 2008 | ||||
| Dates: |
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| Volume: | Vol.29 | ||||
| Number: | No.8 | ||||
| Page Range: | pp. 1380-1382 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Open Access |
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