Open AccessNumerical modelling of heat transfer and hydrodynamics for drop-shaped tubes bundle
Author(s) -
Rawad Deeb,
D V Sidenkov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1683/4/042082
Subject(s) - pressure drop , nusselt number , mechanics , heat transfer , reynolds number , bundle , heat transfer coefficient , heat exchanger , materials science , concentric tube heat exchanger , thermodynamics , dynamic scraped surface heat exchanger , physics , turbulence , composite material , critical heat flux
A numerical study has been conducted to clarify the flow and heat transfer characteristics of a cross-flow heat exchanger with drop-shaped tubes (6-rows of single/double tubes) at zero angle of attack. The study is performed for the Reynolds number Re a = 1.38x10 3 ∼ 9.36 x10 3 .A mathematical and numerical model in software packageANSYS for numerical evaluation of heat transfer and flow field of a bundle of drop-shaped tubes, with taking into account the strain caused by different pressures inside and outside the tubeshas been developed. Correlations of the average Nusselt number Nu av and a friction factor f in terms of Re D,max and Pr for the studied bundles were presented. The result of the numerical simulation indicates the pressure drop coefficient of the studied drop-shaped tube bundles is about 9.86 ∼ 10.88 times smaller than the circular one.