Numerical computations on flow and heat transfer characteristics of a helically coiled heat exchanger using different turbulence models

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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  • Wei-Cheng Lin
  • Yuh-Ming Ferng
  • Ching-Chang Chieng


Original languageEnglish
Pages (from-to)77-86
Journal / PublicationNuclear Engineering and Design
Publication statusPublished - 2013


This study investigates the thermal-hydraulic characteristics of helically coiled tube heat exchangers applied in high temperature gas reactors. In the heat exchanger, the high-temperature helium and the low-temperature water flow through the shell side and the coiled tube, respectively. Three turbulence models are incorporated with Navier-Stokes equations in the numerical simulations: realizable k-ε, low-Reynolds k-ε and Reynolds stress. Existing experimental data on the Nusselt (Nu) number validate the present CFD simulations using these turbulence models. © 2013 Elsevier B.V. All rights reserved.

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