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http://dx.doi.org/10.13000/JFMSE.2013.25.3.625

Two-phase Pressure Drop in Horizontal Rectangular Channel  

Lim, Tae-Woo (Korea Maritime University)
You, Sam-Sang (Korea Maritime University)
Kim, Hwan-Seong (Korea Maritime University)
Publication Information
Journal of Fisheries and Marine Sciences Education / v.25, no.3, 2013 , pp. 625-631 More about this Journal
Abstract
Two-phase pressure drop experiments were performed during flow boiling to deionized water in a microchannel having a hydraulic diameter of $500{\mu}m$. Tests were made in the ranges of heat fluxes from 100 to $400kW/m^2$, vapor qualities from 0 to 0.2 and mass fluxes of 200, 400 and $600kg/m^2s$. The frictional pressure drop during flow boiling is predicted by using two models; the homogeneous model that assumes equal phase velocity and the separate flow model that allows a slip velocity between two phases. From the experimental results, it is found that the two phase multiplier decreases with an increase in mass flux. Measured data of pressure drop are compared to a few available correlations proposed for macroscale and mini/microscale. Among the separated flow models, the correlation model suggested by Lee and Garimella predicted the frictional pressure drop within MAE of 47.2%, which is better than other correlations.
Keywords
Homogeneous Flow Model; Separated Flow Model; Two-phase Flow; Frictional Multiplier; Vapor Quality;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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