3D numerical modeling of boiling in a microchannel by arbitrary Lagrangian-Eulerian (ALE) method

Rahim Jafari*, Tuba Okutucu-Özyurt

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The arbitrary Lagrangian-Eulerian method (ALE) is used to model the hydrodynamics and the heat transfer of an elongated vaporized bubble in a microtube. The Navier-Stokes equations along with the energy equation are solved in ALE description as a single fluid with two subdomains and a moving mesh at the interface of the liquid and the vapor phases. The numerical framework is the commercial CFD code COMSOL multiphysics with the finite element method, which has been improved by external functions to the phase changing. In the simulations, the nucleated bubble comes in contact with superheated water and starts growing. The growth rate of the bubble in the proposed model and the thin liquid film between the elongated bubble and the channel wall are in a very good agreement with the analytical solution and the empirical correlation in the literature, respectively. The interactive effects of two elongated bubbles also are presented.

Original languageEnglish
Pages (from-to)593-603
Number of pages11
JournalApplied Mathematics and Computation
Volume272
DOIs
Publication statusPublished - 1 Jan 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Inc. All rights reserved.

Funding

This project is supported by the Scientific and Technological Research Council of Turkey (TÜBİTAK) under grant number 112M168 .

FundersFunder number
TÜBİTAK112M168
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

    Keywords

    • ALE
    • Evaporation
    • Finite element method
    • Microtube

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