Using change point analysis for image processing of developing adiabatic two-phase flow after expansion valve

Chad D. Bowers, Predrag Stojan Hrnjak

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a method of analyzing images obtained from a high speed camera in a study of developing two-phase refrigerant flow after an expansion valve, using a technique known as Change Point Analysis. Specifically, a method for automating the determination of separation distance and the location of the liquid/vapor interface in stratified type flows is outlined. The experiments were conducted in transparent PVC tubes, with inner diameters of 8.7mm and 15.3mm. A working fluid of oil free R134a was used. Dynamic flow parameters of inlet quality and mass flux were varied from 5-35% and 15-40g/s, respectively. Flow visualization was achieved through the use of a high speed camera.

Original languageEnglish (US)
Title of host publication2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Pages169-174
Number of pages6
EditionPART A
DOIs
StatePublished - Dec 1 2007
Event2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 - San Diego, CA, United States
Duration: Jul 30 2007Aug 2 2007

Publication series

Name2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
NumberPART A
Volume2 FORA

Other

Other2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
CountryUnited States
CitySan Diego, CA
Period7/30/078/2/07

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics

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