Transient data for flow of evaporating fluid in parallel mini pipes and comparison with theoretical simulations

•New transient data on flow distribution and pressure drop in parallel heated pipe.•Multiple steady states are obtained.•The experimental results are compared to the theoretical model.•The transient trajectories are consistent with the linear stability analysis. Flow rate distribution and pressure d...

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Bibliographic Details
Published inInternational journal of multiphase flow Vol. 77; pp. 58 - 64
Main Authors Barnea, Dvora, Simkhis, Michael, Taitel, Yehuda
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2015
Subjects
Evaporation
Parallel pipes
Two-phase flow
Parallel pipes
Two-phase flow
Evaporation
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Summary:•New transient data on flow distribution and pressure drop in parallel heated pipe.•Multiple steady states are obtained.•The experimental results are compared to the theoretical model.•The transient trajectories are consistent with the linear stability analysis. Flow rate distribution and pressure drop of an evaporating fluid in small diameter parallel pipes were investigated at steady state and transient conditions. New quantitative experimental results on the transient response of the system to various changes in the inlet flow rate and the heating input are presented. The experimental results are compared with a time dependent model based on the temporal/local flow patterns in the parallel pipes. The experimental results compare fairly well to the theoretical ones.
ISSN:0301-9322
1879-3533
DOI:10.1016/j.ijmultiphaseflow.2015.08.005