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research-article

Numerical simulation of forced convective boiling in a microchannel

[+] Author and Article Information
Yun Whan Na

Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville FL 32611 USA
yunwhan@gmail.com

Prof. Jacob Chung

Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville FL 32611 USA
jnchung@ufl.edu

1Corresponding author.

ASME doi:10.1115/1.4038989 History: Received May 04, 2017; Revised October 30, 2017

Abstract

Forced convective flow boiling in a single microchannel with different channel heights was studied through a numerical simulation method to investigate bubble dynamics, two-phase flow patterns, and boiling heat transfer. The momentum and energy equations were solved using a finite volume numerical method while the liquid-vapor interface of a bubble is captured using the VOF (Volume of Fluid) technique. The effects of different constant wall heat fluxes and different channel heights on the boiling mechanisms were investigated. The effects of liquid velocity on the bubble departure diameter were also analyzed. The predicted bubble shapes and distribution profiles together with two-phase flow patterns are also provided.

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