Pressure Drop Characteristics on Gas/Liquid Two-Phase Flow in A Curved Mini-Channel Affected by The Wall Wettability
In the present investigation, detailed observation on the pressure drop characteristics affected by the wall wettability in a curved mini-channel were carried out. The test channel is the serpentine channel with six straight sections and curved sections. The test channel has a square cross section t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2007-12-01
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| Series: | Journal of Fluid Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jfst/2/2/2_2_441/_pdf/-char/en |
| _version_ | 1818753729840545792 |
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| author | Toru SUKAWA Tomoya HASEGAWA Kenji YOSHIDA Isao KATAOKA |
| author_facet | Toru SUKAWA Tomoya HASEGAWA Kenji YOSHIDA Isao KATAOKA |
| author_sort | Toru SUKAWA |
| collection | DOAJ |
| description | In the present investigation, detailed observation on the pressure drop characteristics affected by the wall wettability in a curved mini-channel were carried out. The test channel is the serpentine channel with six straight sections and curved sections. The test channel has a square cross section that has 2.0mm on each side, and the radius of curvature was 1.0mm. The test channel was made of the transparent acrylic resin for flow visualization. In order to investigate the influence of the wall wettability, water-repellent and attracting treatments were applied to the acrylic channel, respectively. In this investigation, in relation to the analysis method of the pressure drop, we evaluated the time averaged pressure drop and the pressure fluctuation, respectively. In the case of the water-repellent and attracting channel, the time averaged pressure drop was lower than the normal channel. In addition, in the straight section without the water repellent, the fluctuation of the pressure drop was considered to be correlated only by the Lockhart-Martinelli's parameter. On the other hand, in the cases the effects of channel curvature and water repellent are outstanding, the fluctuation of the pressured drop was widely scattered and hard to be correlated by the Lockhart-Martinelli's parameter. |
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| format | Article |
| id | doaj.art-b8f3a785c134422a9063c8d892989202 |
| institution | Directory Open Access Journal |
| issn | 1880-5558 |
| language | English |
| last_indexed | 2024-12-18T05:11:59Z |
| publishDate | 2007-12-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Fluid Science and Technology |
| spelling | doaj.art-b8f3a785c134422a9063c8d8929892022022-12-21T21:19:53ZengThe Japan Society of Mechanical EngineersJournal of Fluid Science and Technology1880-55582007-12-012244145310.1299/jfst.2.441jfstPressure Drop Characteristics on Gas/Liquid Two-Phase Flow in A Curved Mini-Channel Affected by The Wall WettabilityToru SUKAWA0Tomoya HASEGAWA1Kenji YOSHIDA2Isao KATAOKA3Department of Mechanical Engineering, Osaka UniversityDepartment of Mechanical Engineering, Osaka UniversityDepartment of Mechanical Engineering, Osaka UniversityDepartment of Mechanical Engineering, Osaka UniversityIn the present investigation, detailed observation on the pressure drop characteristics affected by the wall wettability in a curved mini-channel were carried out. The test channel is the serpentine channel with six straight sections and curved sections. The test channel has a square cross section that has 2.0mm on each side, and the radius of curvature was 1.0mm. The test channel was made of the transparent acrylic resin for flow visualization. In order to investigate the influence of the wall wettability, water-repellent and attracting treatments were applied to the acrylic channel, respectively. In this investigation, in relation to the analysis method of the pressure drop, we evaluated the time averaged pressure drop and the pressure fluctuation, respectively. In the case of the water-repellent and attracting channel, the time averaged pressure drop was lower than the normal channel. In addition, in the straight section without the water repellent, the fluctuation of the pressure drop was considered to be correlated only by the Lockhart-Martinelli's parameter. On the other hand, in the cases the effects of channel curvature and water repellent are outstanding, the fluctuation of the pressured drop was widely scattered and hard to be correlated by the Lockhart-Martinelli's parameter.https://www.jstage.jst.go.jp/article/jfst/2/2/2_2_441/_pdf/-char/entwo-phase flowcurved mini-channelwettabilitypressure drop |
| spellingShingle | Toru SUKAWA Tomoya HASEGAWA Kenji YOSHIDA Isao KATAOKA Pressure Drop Characteristics on Gas/Liquid Two-Phase Flow in A Curved Mini-Channel Affected by The Wall Wettability Journal of Fluid Science and Technology two-phase flow curved mini-channel wettability pressure drop |
| title | Pressure Drop Characteristics on Gas/Liquid Two-Phase Flow in A Curved Mini-Channel Affected by The Wall Wettability |
| title_full | Pressure Drop Characteristics on Gas/Liquid Two-Phase Flow in A Curved Mini-Channel Affected by The Wall Wettability |
| title_fullStr | Pressure Drop Characteristics on Gas/Liquid Two-Phase Flow in A Curved Mini-Channel Affected by The Wall Wettability |
| title_full_unstemmed | Pressure Drop Characteristics on Gas/Liquid Two-Phase Flow in A Curved Mini-Channel Affected by The Wall Wettability |
| title_short | Pressure Drop Characteristics on Gas/Liquid Two-Phase Flow in A Curved Mini-Channel Affected by The Wall Wettability |
| title_sort | pressure drop characteristics on gas liquid two phase flow in a curved mini channel affected by the wall wettability |
| topic | two-phase flow curved mini-channel wettability pressure drop |
| url | https://www.jstage.jst.go.jp/article/jfst/2/2/2_2_441/_pdf/-char/en |
| work_keys_str_mv | AT torusukawa pressuredropcharacteristicsongasliquidtwophaseflowinacurvedminichannelaffectedbythewallwettability AT tomoyahasegawa pressuredropcharacteristicsongasliquidtwophaseflowinacurvedminichannelaffectedbythewallwettability AT kenjiyoshida pressuredropcharacteristicsongasliquidtwophaseflowinacurvedminichannelaffectedbythewallwettability AT isaokataoka pressuredropcharacteristicsongasliquidtwophaseflowinacurvedminichannelaffectedbythewallwettability |