Mechanistic modelling of dryout and post-dryout heat transfer

Henryk Anglart, Haipeng Li and Grzegorz Niewinski

Energy, 2018, vol. 161, issue C, 352-360

Abstract: In this paper a new mechanistic model for the diabatic annular two-phase flow is presented and applied to prediction of dryout and post-dryout heat transfer in various channels. The model employs a computational fluid dynamics code – OpenFOAM® – to solve the governing equations of two-phase mixture flowing in a heated channel. Additional closure laws have been implemented to calculate the location of the dryout and to predict wall temperature in the post-dryout region. Calculated results have been compared with experimental data obtained in pipes and good agreement between predictions and measurements has been achieved. The presented model is applicable to complex geometries and thus can be used for prediction of post-dryout heat transfer in a wide variety of energy conversion systems.

Keywords: Dryout; Post-dryout; Annular flow; Liquid film; Droplets (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:161:y:2018:i:c:p:352-360

DOI: 10.1016/j.energy.2018.07.011

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