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Turbulence model effect on heat exchange characteristics through the neutron beam window for European spallation source

S. Spitans (Laboratory for Mathematical Modelling of Environmental and Technological Processes, University of Latvia, Riga, Latvia)
A. Jakovičs (Laboratory for Mathematical Modelling of Environmental and Technological Processes, University of Latvia, Riga, Latvia)

Abstract

Purpose

The purpose of this paper is to compare k‐ω shear‐stress transport (SST) and large eddy simulation (LES) turbulence model application effect on numerical computation of flow pattern and heat exchange characteristics through the neutron beam window region for European spallation source setup model.

Design/methodology/approach

Transient hydrodynamic and thermal calculations with appropriate heat sources are performed using both turbulence models and typical discrepancies in flow and thermal patterns are discussed, as well as, simulation results are qualitatively compared with experimental data for heat transfer coefficient distribution α at the window surface.

Findings

Contribution of greater k‐energy field obtained with LES calculation leads to prediction of more intensive heat transfer in comparison to k‐ω SST.

Originality/value

The paper illustrates discrepancies of thermal patterns caused by application of k‐ω SST and LES turbulent models.

Keywords

Citation

Spitans, S. and Jakovičs, A. (2011), "Turbulence model effect on heat exchange characteristics through the neutron beam window for European spallation source", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 30 No. 5, pp. 1651-1662. https://doi.org/10.1108/03321641111152801

Publisher

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Emerald Group Publishing Limited

Copyright © 2011, Emerald Group Publishing Limited