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Mechanistic modelling of dryout and post-dryout heat transfer
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Engineering.ORCID iD: 0000-0001-5595-1952
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Engineering.
Warsaw Univ Technol, Inst Heat Engn, Nowowiejska 21-25, PL-00665 Warsaw, Poland..
2018 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 161, p. 352-360Article in journal (Refereed) Published
Abstract [en]

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 (R) - 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.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 161, p. 352-360
Keywords [en]
Dryout, Post-dryout, Annular flow, Liquid film, Droplets
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:kth:diva-237091DOI: 10.1016/j.energy.2018.07.011ISI: 000446148400031Scopus ID: 2-s2.0-85053079758OAI: oai:DiVA.org:kth-237091DiVA, id: diva2:1258422
Conference
13th Conference on Research and Development in Power Engineering (RDPE), NOV 28-DEC 01, 2017, Warsaw, Poland
Note

QC 20181024

Available from: 2018-10-24 Created: 2018-10-24 Last updated: 2018-10-24Bibliographically approved

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Anglart, Henryk

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