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

Chad D. Bowers; Predrag Stojan Hrnjak

doi:10.1115/FEDSM2007-37633

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

Chad D. Bowers, Predrag Stojan Hrnjak

Mechanical Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English (US)
Title of host publication	2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Pages	169-174
Number of pages	6
Edition	PART A
DOIs	https://doi.org/10.1115/FEDSM2007-37633
State	Published - Dec 1 2007
Event	2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 - San Diego, CA, United States Duration: Jul 30 2007 → Aug 2 2007

Publication series

Name	2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Number	PART A
Volume	2 FORA

Other

Other	2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Country/Territory	United States
City	San Diego, CA
Period	7/30/07 → 8/2/07

ASJC Scopus subject areas

Mechanical Engineering
Condensed Matter Physics

Online availability

10.1115/FEDSM2007-37633

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Bowers, C. D., & Hrnjak, P. S. (2007). Using change point analysis for image processing of developing adiabatic two-phase flow after expansion valve. In 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 (PART A ed., pp. 169-174). (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; Vol. 2 FORA, No. PART A). https://doi.org/10.1115/FEDSM2007-37633

Using change point analysis for image processing of developing adiabatic two-phase flow after expansion valve. / Bowers, Chad D.; Hrnjak, Predrag Stojan.

2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A. ed. 2007. p. 169-174 (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; Vol. 2 FORA, No. PART A).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Bowers, CD & Hrnjak, PS 2007, Using change point analysis for image processing of developing adiabatic two-phase flow after expansion valve. in 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A edn, 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007, no. PART A, vol. 2 FORA, pp. 169-174, 2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007, San Diego, CA, United States, 7/30/07. https://doi.org/10.1115/FEDSM2007-37633

Bowers CD, Hrnjak PS. Using change point analysis for image processing of developing adiabatic two-phase flow after expansion valve. In 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A ed. 2007. p. 169-174. (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; PART A). https://doi.org/10.1115/FEDSM2007-37633

Bowers, Chad D. ; Hrnjak, Predrag Stojan. / Using change point analysis for image processing of developing adiabatic two-phase flow after expansion valve. 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A. ed. 2007. pp. 169-174 (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; PART A).

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

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