Multibody Simulation for Gravity-Driven Falling Film Using Computational Fluid Dynamics

Susana Marrero Iglesias, Dany Sanchez Dominguez, Leorlen Yunier Rojas Mazaira, Alberto Escrivá, José Luis Muñoz-Cobo, Yago Rivera, Cesar Berna

Resumo


The annular flow two-phase regime appears in nuclear power plants cooling by water. On accidents with lost of cooling this regime determine the heat extraction conditions from the core.  The experimental facility Gerador de Película Ondulatoria (GEPELON) was constructed at Universitat Politècnica de València to study this phenomenon.  In this work, we use computational fluid dynamics techniques to simulate an air-water regime, specifically a gravity-driven falling liquid film in the GEPELON experimental facility. We consider a multibody geometry where the porous sintered of the input device is simulated in a realistic way. The Volume of Fluid (VOF) model was used in the resolution of the constitutive equations. We propose three geometric approximations to estimate film thickness, and simulation results were compared with experimental values. The simulation results show a good agreement with experimental measurements. Besides, no significant differences were observed between geometrical approximations for film thickness calculations.

Palavras-chave


Computational Fluid Dynamics; Falling liquid film; Annular flow; Multibody simulation

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DOI: http://dx.doi.org/10.21575/25254782rmetg2020vol5n61335

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Direitos autorais 2020 Susana M. Iglesias, Dany S. Dominguez, Leorlen Rojas Mazaira, Alberto Escrivá, José L. Muñoz-Cobo, Yago Rivera, Cesar Berna

Revista Mundi Engenharia, Tecnologia e Gestão ISSN 2525-4782

Qualis: B4 - Interdisciplinar, B5 - Geografia, B5 - Administração Pública e de Empresas, Ciências Contábeis e Turismo, B5 - Comunicação e Informação, B5 - Engenharias III