Can CFD accurately predict the heat-transfer and pressure-drop performance of finned-tube bundles?

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Title: Can CFD accurately predict the heat-transfer and pressure-drop performance of finned-tube bundles?
Authors: Ó Cléirigh, Cathal T.
Smith, William
Permanent link: http://hdl.handle.net/10197/7596
Date: 5-Dec-2014
Abstract: A Computational Fluid Dynamics (CFD) model capable of predicting heat-transfer and pressure-drop performance of finned-tube bundles in cross flow is presented. Three helically-wound fin geometries are investigated: solid (continuous); partially-serrated; and fully-serrated. A steady-state approach, with a two-equation turbulence model, is employed to examine Reynolds numbers in the range of 5000-30,000. The external Nusselt number and overall pressure drop predicted by the CFD model are compared with those predicted by published empirical correlations. The CFD results fall within the range of values predicted by the empirical correlations. The CFD results show that the Nusselt number increases by up to 23% between the partially- and fully-serrated fins; this sensitivity to serration geometry is not captured in any currently published empirical correlations.
Funding Details: Enterprise Ireland
Type of material: Journal Article
Publisher: Elsevier
Journal: Applied Thermal Engineering
Volume: 73
Issue: 1
Start page: 681
End page: 690
Copyright (published version): 2014 Elsevier
Keywords: CFDHeat exchangerBoilerFinned tubeSegmented finSerrated finHeat transfer
DOI: 10.1016/j.applthermaleng.2014.08.019
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mechanical & Materials Engineering Research Collection

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