Formulation of time and volume averaged two-fluid model considering structural materials in a control volume

Sang Yong Lee; Takashi Hibiki; Mamoru Ishii

doi:10.1016/j.nucengdes.2008.09.008

Formulation of time and volume averaged two-fluid model considering structural materials in a control volume

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Overview

13 Scopus Citations

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Author(s)

Sang Yong Lee
Takashi Hibiki
Mamoru Ishii

Detail(s)

Original language	English
Pages (from-to)	127-139
Journal / Publication	Nuclear Engineering and Design
Volume	239
Issue number	1
Publication status	Published - Jan 2009
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.nucengdes.2008.09.008 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-57649083742&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(9e19ee38-be73-47ab-b15f-b9269a4f065b).html

Abstract

Time-volume averaged two-fluid model considering structural materials in a control volume (porous media approach) is formulated for two-phase flow analyses. The time-volume averaged two-fluid model is obtained rigorously by averaging local time-averaged two-fluid model over a control volume including structural materials. The volume porosity based model obtained by the simple time-volume averaging is converted into the surface porosity based model by introducing the directional surface porosity concept. The covariance approach is adopted to consider distributions of various variables in the control volume. The obtained porous media formulation is consistent with existing two-fluid model. Existing constitutive equations may be applicable to the porous media formulation provided they are properly time-volume averaged in the control volume. The strategy to obtain time-volume averaged constitutive equations is briefly discussed. © 2008 Elsevier B.V. All rights reserved.

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