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THMT-12. Proceedings of the Seventh International Symposium On Turbulence Heat and Mass Transfer
September, 24-27, 2012, Palermo, Italy

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal


ISBN Print: 978-1-56700-302-4

ISSN: 2377-2816

Flow and Heat Transfer Characteristics of a Helically Coiled Heat Exchanger Using Different Turbulence Models

pages 2321-2332
DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2390
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ABSTRACT

This study investigates the thermal-hydraulic characteristics of helically coiled tube heat exchangers in high temperature gas reactors. In a heat exchanger, the high-temperature helium and low-temperature water flow through the shell side and the coiled tube, respectively. Three turbulence models are adopted in 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.

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