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Journal of Enhanced Heat Transfer
IF: 1.406 5-Year IF: 1.075 SJR: 0.287 SNIP: 0.653 CiteScore™: 1.2

ISSN Print: 1065-5131
ISSN Online: 1026-5511

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v5.i4.10
pages 217-229

Electric Field Effect in Boiling Heat Transfer. Part A: Simulation of the Electric Field and Electric Forces

Tassos G. Karayiannis
Department of Mechanical and Aerospace Engineering Brunel University London, Uxbridge, UP8 3PH, UK
Y. Xu
National Refrigeration and Air Conditioning Products, Inc. Brantford, Ont., N3T 5Y6, Canada

ABSTRACT

A mathematical model predicting the electric field distribution in a poor electrically conductive boiling fluid and the electric forces on bubbles is described in this paper. This novel model can account for the presence of multiple bubbles, the thermal boundary layer and the generated free charges. The finite element method was successfully used to solve this model. The effect of multiple bubbles and the generated free charges was clarified. The electric field distribution, the electric body force and accordingly the resultant force acting on the bubbles were calculated for a shell and tube evaporator.


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