Entropy Generation, Heat Transfer of Water Near Density Inversion Region with Relative Positions of Hot and Cold Walls: Numerical Analysis
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Published:2023-03-16
Issue:5
Volume:15
Page:42-53
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ISSN:2180-1363
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Container-title:CFD Letters
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language:
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Short-container-title:CFDL
Author:
Luan Nguyen Thanh ,Phu Nguyen Minh ,Ha Nguyen Minh
Abstract
This study investigates the entropy generation and heat transfer of water density inversion region in a square cavity with the different relative positions of hot and cold walls by numerical simulation. Mathematical models are solved using the EES (Engineering Equation Solver) program. A physical model is a 38 mm square cavity filled with water, with cold and hot wall temperatures maintained at 0oC and 10oC. Results indicated that the Nusselt number of cases 1 (cold and hot walls on both sides) is higher than case 2 (hot wall above, cold wall below) and case 3 (cold wall above, hot wall below) by 1.582 and 1.059 times, respectively. The average total generation per unit volume in case 1 increases by 1.577 times and 1.059 times, respectively, compared to cases 2 and 3, which almost correspondingly increase with heat transfer capacity. Entropy generation by fluid friction is negligible
Publisher
Akademia Baru Publishing
Subject
Fluid Flow and Transfer Processes,Modeling and Simulation
Cited by
1 articles.
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