Effect of channel geometries on two-phase mixture level swell and its fluctuation amplitude
Gas–liquid two-phase flow in a stagnant pool is an important phenomenon in designing and operating industrial facilities. When gas is mixed or boiling occurs in stagnant water, the actual water level appears higher than the original water level. The actual water level is called a two-phase mixture l...
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The Japan Society of Mechanical Engineers
2020
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oai:doaj.org-article:2fb8de8b1e524695acb6e741bad6ce602021-11-29T05:56:30ZEffect of channel geometries on two-phase mixture level swell and its fluctuation amplitude2187-974510.1299/mej.19-00555https://doaj.org/article/2fb8de8b1e524695acb6e741bad6ce602020-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/3/7_19-00555/_pdf/-char/enhttps://doaj.org/toc/2187-9745Gas–liquid two-phase flow in a stagnant pool is an important phenomenon in designing and operating industrial facilities. When gas is mixed or boiling occurs in stagnant water, the actual water level appears higher than the original water level. The actual water level is called a two-phase mixture level and largely depends on the flow channel geometries, dimensions, and flow conditions. This study focuses on the influence of channel geometries, circular pipes and rod bundles, on the two-phase mixture level and its fluctuation behavior. An air–water experiment using circular pipes with inner diameters of 50 and 224 mm and 5 × 5 and 10 × 10 rod bundles was conducted, and the two-phase mixture level swell was visually observed. As the inlet gas flow rate increased, the two-phase mixture level basically increased regardless of the channel geometry. The fluctuation amplitude was remarkably increased by formulating the slug bubbles covering the entire diameter in the small pipe with a diameter of up to 50 mm. In the rod bundles and large pipe with a diameter of 224 mm, no slug bubble was sustained, and the two-phase water level and its fluctuation amplitude were relatively small compared with those of the small pipe.Takahiro ARAIMasahiro FURUYAKenetsu SHIRAKAWAThe Japan Society of Mechanical Engineersarticletwo-phase mixture levelwater level swellcircular piperod bundlefluctuation amplitudecollapsed water levelair–water two-phase flowMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 3, Pp 19-00555-19-00555 (2020) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
two-phase mixture level water level swell circular pipe rod bundle fluctuation amplitude collapsed water level air–water two-phase flow Mechanical engineering and machinery TJ1-1570 |
| spellingShingle |
two-phase mixture level water level swell circular pipe rod bundle fluctuation amplitude collapsed water level air–water two-phase flow Mechanical engineering and machinery TJ1-1570 Takahiro ARAI Masahiro FURUYA Kenetsu SHIRAKAWA Effect of channel geometries on two-phase mixture level swell and its fluctuation amplitude |
| description |
Gas–liquid two-phase flow in a stagnant pool is an important phenomenon in designing and operating industrial facilities. When gas is mixed or boiling occurs in stagnant water, the actual water level appears higher than the original water level. The actual water level is called a two-phase mixture level and largely depends on the flow channel geometries, dimensions, and flow conditions. This study focuses on the influence of channel geometries, circular pipes and rod bundles, on the two-phase mixture level and its fluctuation behavior. An air–water experiment using circular pipes with inner diameters of 50 and 224 mm and 5 × 5 and 10 × 10 rod bundles was conducted, and the two-phase mixture level swell was visually observed. As the inlet gas flow rate increased, the two-phase mixture level basically increased regardless of the channel geometry. The fluctuation amplitude was remarkably increased by formulating the slug bubbles covering the entire diameter in the small pipe with a diameter of up to 50 mm. In the rod bundles and large pipe with a diameter of 224 mm, no slug bubble was sustained, and the two-phase water level and its fluctuation amplitude were relatively small compared with those of the small pipe. |
| format |
article |
| author |
Takahiro ARAI Masahiro FURUYA Kenetsu SHIRAKAWA |
| author_facet |
Takahiro ARAI Masahiro FURUYA Kenetsu SHIRAKAWA |
| author_sort |
Takahiro ARAI |
| title |
Effect of channel geometries on two-phase mixture level swell and its fluctuation amplitude |
| title_short |
Effect of channel geometries on two-phase mixture level swell and its fluctuation amplitude |
| title_full |
Effect of channel geometries on two-phase mixture level swell and its fluctuation amplitude |
| title_fullStr |
Effect of channel geometries on two-phase mixture level swell and its fluctuation amplitude |
| title_full_unstemmed |
Effect of channel geometries on two-phase mixture level swell and its fluctuation amplitude |
| title_sort |
effect of channel geometries on two-phase mixture level swell and its fluctuation amplitude |
| publisher |
The Japan Society of Mechanical Engineers |
| publishDate |
2020 |
| url |
https://doaj.org/article/2fb8de8b1e524695acb6e741bad6ce60 |
| work_keys_str_mv |
AT takahiroarai effectofchannelgeometriesontwophasemixturelevelswellanditsfluctuationamplitude AT masahirofuruya effectofchannelgeometriesontwophasemixturelevelswellanditsfluctuationamplitude AT kenetsushirakawa effectofchannelgeometriesontwophasemixturelevelswellanditsfluctuationamplitude |
| _version_ |
1718407577428033536 |