Multidimensional modeling of two‐phase flow and heat transfer-Reference-Cited by-同舟云学术

Multidimensional modeling of two‐phase flow and heat transfer

Published:2008-05-22 Issue:3/4 Volume:18 Page:491-513
ISSN:0961-5539
Container-title:International Journal of Numerical Methods for Heat & Fluid Flow
language:en
Short-container-title:

Author:

Podowski Michael Z.

Abstract

PurposeThis paper seeks to discuss a mechanistic modeling concept for local phenomena governing two‐ and multi‐phase flows and heat transfer.Design/methodology/approachAn overview is given of selected issues concerning the formulation of multidimensional models of two‐phase flow and heat transfer. A complete computational multiphase fluid dynamics (CMFD) model of two‐phase flow is presented, including local constitutive models applicable to two‐phase flows in heated channels. Results are shown of model testing and validation.FindingsIt has been demonstrated that the overall model is capable of capturing various local flow and heat transfer phenomena in general, and the onset of temperature excursion (CHF) in low quality forced‐convection boiling, in particular.Research limitations/implicationsWhereas the multiphase model formulation is applicable to a large class of problems, geometries and operating conditions, the closure laws and results are focused on forced‐convection boiling in heated channels.Practical implicationsThe proposed approach can be used to predict multidimensional velocity field and phase distribution in two‐phase flow devices and components used in thermal power plants, nuclear power plants and chemical processing plants.Originality/valueA complete mechanistic multidimensional model of forced‐convection boiling in heated channels is given. The potential of a CMFD approach is demonstrated to perform virtual experiments that can be used in system design and optimization, and in safety analysis.

Publisher

Emerald

Subject

Applied Mathematics,Computer Science Applications,Mechanical Engineering,Mechanics of Materials

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