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Heat Transfer Research
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ISSN Imprimir: 1064-2285
ISSN En Línea: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v43.i5.30
pages 425-442

INTERFACIAL SHEAR OF CO-CURRENT STEAM−WATER FLOW ESTIMATION − II. ENHANCED SINGLE-PHASE FLUENT MODEL IN CONJUNCTION WITH MEASURED PROFILES OF STEAM VELOCITY AND LONGITUDINAL WATER TEMPERATURE

Stasys Gasiunas
Lithuanian Energy Institute, 3 Breslaujos str., LT-3035 Kaunas, Lithuania
Marijus Seporaitis
Lithuanian Energy Institute, 3 Breslaujos g., Kaunas, LITHUANIA, LT-44403
Benediktas B. Cesna
Lithuanian Energy Institute, Kaunas, Lithuania
Mindaugas Valincius
Lithuanian Energy Institute, 3 Breslaujos str., LT-3035 Kaunas, Lithuania
Raimondas Pabarcius
Lithuanian Energy Institute, 3 Breslaujos str., LT-3035 Kaunas, Lithuania
Darius Laurinavicius
Lithuanian Energy Institute, Kaunas, Lithuania

SINOPSIS

The results of condensation implosion tests (Almenas et al., 2006) and slug flow occurrence (Chun and Yu, 2000) lead to the conclusion that condensation may have some serious impact on steam−liquid interface stability. To explore this in detail a special test facility was constructed and the FLUENT 3D model (single phase with condensation simulation) is developed at the Lithuanian Energy Institute. The following investigation seeks to determine the condensation influence on the stability of a horizontal two-phase flow interface and the overall purpose of the program is to employ transitional behaviors with positive feedback between momentum and energy transfer in real systems.
This paper presents the experimental test facility developed at LEI and the methodology of the experiments whose results were employed to adapt and verify the FLUENT 3D model. Preliminary results of modeling show that both the boundary-layer thickness and interfacial shear strongly depend on condensation.


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