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.
|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||Copyright (published version):||2014 Elsevier||Keywords:||CFD; Heat exchanger; Boiler; Finned tube; Segmented fin; Serrated fin; Heat 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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