Experimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow

Recently, with the appearance of the two-phase flow ejector in refrigeration air conditioning and heat pump systems, the efficiency of the cycle has largely been improved in comparison with that of conventional cooling and heating systems. We have been developing an ejector for the refrigeration cyc...

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Autores principales:	Yosuke KAWAMURA, Masafumi NAKAGAWA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	multiphase flow supersonic flow shock waves expansion waves carbon-dioxide Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/876d7d65ca2340628e748abbccb8bebe
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spelling	oai:doaj.org-article:876d7d65ca2340628e748abbccb8bebe2021-11-26T06:58:33ZExperimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow2187-974510.1299/mej.16-00243https://doaj.org/article/876d7d65ca2340628e748abbccb8bebe2016-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/6/3_16-00243/_pdf/-char/enhttps://doaj.org/toc/2187-9745Recently, with the appearance of the two-phase flow ejector in refrigeration air conditioning and heat pump systems, the efficiency of the cycle has largely been improved in comparison with that of conventional cooling and heating systems. We have been developing an ejector for the refrigeration cycle and fundamentally researching the behavior of two-dimensional expansion waves and oblique shock waves to clarify the characteristics of waves occurring during high-speed two-phase flow. In previous studies, it was revealed that an oblique shock wave is generated at the nozzle exit of the ejector and affects the flow field of the supersonic two-phase flow inside the mixing section in the ejector. This is because the speed of sound for a two-phase flow is low compared to that for a single-phase flow. In the present study, we elucidate the behavior of oblique shock waves and expansion waves of supersonic two-phase flow by experiments using carbon dioxide refrigerant. The angle of the oblique shock waves and the expansion waves were experimentally measured, and corresponded well with those calculated using a theoretical model.Yosuke KAWAMURAMasafumi NAKAGAWAThe Japan Society of Mechanical Engineersarticlemultiphase flowsupersonic flowshock wavesexpansion wavescarbon-dioxideMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 6, Pp 16-00243-16-00243 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	multiphase flow supersonic flow shock waves expansion waves carbon-dioxide Mechanical engineering and machinery TJ1-1570
spellingShingle	multiphase flow supersonic flow shock waves expansion waves carbon-dioxide Mechanical engineering and machinery TJ1-1570 Yosuke KAWAMURA Masafumi NAKAGAWA Experimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow
description	Recently, with the appearance of the two-phase flow ejector in refrigeration air conditioning and heat pump systems, the efficiency of the cycle has largely been improved in comparison with that of conventional cooling and heating systems. We have been developing an ejector for the refrigeration cycle and fundamentally researching the behavior of two-dimensional expansion waves and oblique shock waves to clarify the characteristics of waves occurring during high-speed two-phase flow. In previous studies, it was revealed that an oblique shock wave is generated at the nozzle exit of the ejector and affects the flow field of the supersonic two-phase flow inside the mixing section in the ejector. This is because the speed of sound for a two-phase flow is low compared to that for a single-phase flow. In the present study, we elucidate the behavior of oblique shock waves and expansion waves of supersonic two-phase flow by experiments using carbon dioxide refrigerant. The angle of the oblique shock waves and the expansion waves were experimentally measured, and corresponded well with those calculated using a theoretical model.
format	article
author	Yosuke KAWAMURA Masafumi NAKAGAWA
author_facet	Yosuke KAWAMURA Masafumi NAKAGAWA
author_sort	Yosuke KAWAMURA
title	Experimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow
title_short	Experimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow
title_full	Experimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow
title_fullStr	Experimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow
title_full_unstemmed	Experimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow
title_sort	experimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/876d7d65ca2340628e748abbccb8bebe
work_keys_str_mv	AT yosukekawamura experimentalstudyontheobliqueshockwavesandexpansionwavesinthesupersoniccarbondioxidetwophaseflow AT masafuminakagawa experimentalstudyontheobliqueshockwavesandexpansionwavesinthesupersoniccarbondioxidetwophaseflow
_version_	1718409730692481024

Experimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow

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