Open AccessNumerical simulation of the heat transfer of staggered drop-shaped tubes bundle
Author(s) -
Rawad Deeb,
D V Sidenkov
Publication year - 2019
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 - 10.1088/1742-6596/1359/1/012135
Subject(s) - prandtl number , mechanics , heat transfer , pressure drop , nusselt number , heat exchanger , reynolds number , bundle , materials science , degree rankine , dynamic scraped surface heat exchanger , thermodynamics , heat transfer coefficient , physics , turbulence , composite material , critical heat flux
Tube bundles can be used as a separation heat exchanger in the “organic” Rankine cycle power plants (ORC), while the hot gas passes over the outer surface, and the working substance ORC flows inside the tubes. A numerical study has been conducted to clarify heat transfer and hydrodynamics of a cross-flow heat exchanger with staggered drop-shaped tubes at different flow angles of attack (θ). A mathematical and numerical model in software package ANSYS has been developed 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 tubes. The results of numerical simulation of pressure, velocity, temperature distribution in the tube’s bundle had provided the development of equation to determine the average Nusselt number (Nu) in terms of Reynolds number (Re), Prandtl number (Pr) and angle of attack.