Countercurrent Air-Water Flow in a Scale-Down Model of a Pressurizer Surge Line
Steam generated in a reactor core and water condensed in a pressurizer form a countercurrent flow in a surge line between a hot leg and the pressurizer during reflux cooling. Characteristics of countercurrent flow limitation (CCFL) in a 1/10-scale model of the surge line were measured using air and...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2012/174838 |
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| author | Takashi Futatsugi Chihiro Yanagi Michio Murase Shigeo Hosokawa Akio Tomiyama |
| author_facet | Takashi Futatsugi Chihiro Yanagi Michio Murase Shigeo Hosokawa Akio Tomiyama |
| author_sort | Takashi Futatsugi |
| collection | DOAJ |
| description | Steam generated in a reactor core and water condensed in a pressurizer form a countercurrent flow in a surge line between a hot leg and the pressurizer during reflux cooling. Characteristics of countercurrent flow limitation (CCFL) in a 1/10-scale model of the surge line were measured using air and water at atmospheric pressure and room temperature. The experimental results show that CCFL takes place at three different locations, that is, at the upper junction, in the surge line, and at the lower junction, and its characteristics are governed by the most dominating flow limitation among the three. Effects of inclination angle and elbows of the surge line on CCFL characteristics were also investigated experimentally. The effects of inclination angle on CCFL depend on the flow direction, that is, the effect is large for the nearly horizontal flow and small for the vertical flow at the upper junction. The presence of elbows increases the flow limitation in the surge line, whereas the flow limitations at the upper and lower junctions do not depend on the presence of elbows. |
| format | Article |
| id | doaj-art-5d4dcc7ed20644b5a1ec333e14dcfaa0 |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-5d4dcc7ed20644b5a1ec333e14dcfaa02025-02-03T01:02:58ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832012-01-01201210.1155/2012/174838174838Countercurrent Air-Water Flow in a Scale-Down Model of a Pressurizer Surge LineTakashi Futatsugi0Chihiro Yanagi1Michio Murase2Shigeo Hosokawa3Akio Tomiyama4Department of Mechanical Engineering, Faculty of Engineering, Kobe University, 1-1 Rokkodai, Nada, Hyogo Kobe, 657-8501, JapanInstitute of Nuclear Safety System, Inc. (INSS), 64 Sata, Mihama-cho, Mikata-gun, Fukui 919-1205, JapanInstitute of Nuclear Safety System, Inc. (INSS), 64 Sata, Mihama-cho, Mikata-gun, Fukui 919-1205, JapanDepartment of Mechanical Engineering, Faculty of Engineering, Kobe University, 1-1 Rokkodai, Nada, Hyogo Kobe, 657-8501, JapanDepartment of Mechanical Engineering, Faculty of Engineering, Kobe University, 1-1 Rokkodai, Nada, Hyogo Kobe, 657-8501, JapanSteam generated in a reactor core and water condensed in a pressurizer form a countercurrent flow in a surge line between a hot leg and the pressurizer during reflux cooling. Characteristics of countercurrent flow limitation (CCFL) in a 1/10-scale model of the surge line were measured using air and water at atmospheric pressure and room temperature. The experimental results show that CCFL takes place at three different locations, that is, at the upper junction, in the surge line, and at the lower junction, and its characteristics are governed by the most dominating flow limitation among the three. Effects of inclination angle and elbows of the surge line on CCFL characteristics were also investigated experimentally. The effects of inclination angle on CCFL depend on the flow direction, that is, the effect is large for the nearly horizontal flow and small for the vertical flow at the upper junction. The presence of elbows increases the flow limitation in the surge line, whereas the flow limitations at the upper and lower junctions do not depend on the presence of elbows.http://dx.doi.org/10.1155/2012/174838 |
| spellingShingle | Takashi Futatsugi Chihiro Yanagi Michio Murase Shigeo Hosokawa Akio Tomiyama Countercurrent Air-Water Flow in a Scale-Down Model of a Pressurizer Surge Line Science and Technology of Nuclear Installations |
| title | Countercurrent Air-Water Flow in a Scale-Down Model of a Pressurizer Surge Line |
| title_full | Countercurrent Air-Water Flow in a Scale-Down Model of a Pressurizer Surge Line |
| title_fullStr | Countercurrent Air-Water Flow in a Scale-Down Model of a Pressurizer Surge Line |
| title_full_unstemmed | Countercurrent Air-Water Flow in a Scale-Down Model of a Pressurizer Surge Line |
| title_short | Countercurrent Air-Water Flow in a Scale-Down Model of a Pressurizer Surge Line |
| title_sort | countercurrent air water flow in a scale down model of a pressurizer surge line |
| url | http://dx.doi.org/10.1155/2012/174838 |
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