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Mechanistic modelling of dryout and post-dryout heat transfer
KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnenergiteknik.ORCID-id: 0000-0001-5595-1952
KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnenergiteknik.
Warsaw Univ Technol, Inst Heat Engn, Nowowiejska 21-25, PL-00665 Warsaw, Poland..
2018 (engelsk)Inngår i: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 161, s. 352-360Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
Elsevier, 2018. Vol. 161, s. 352-360
Emneord [en]
Dryout, Post-dryout, Annular flow, Liquid film, Droplets
HSV kategori
Identifikatorer
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
Konferanse
13th Conference on Research and Development in Power Engineering (RDPE), NOV 28-DEC 01, 2017, Warsaw, Poland
Merknad

QC 20181024

Tilgjengelig fra: 2018-10-24 Laget: 2018-10-24 Sist oppdatert: 2018-10-24bibliografisk kontrollert

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