Experimental study on two-dimensional cross-flow impeller with a minimal splitter plate instead of casings
In the present study, the authors investigate the simplest model of cross-flow impellers, in order to provide the fundamental flow features of cross-flow impellers. The model is a two-dimensional cross-flow impeller with a very-high aspect ratio, and rotates in stationary fluid. More strictly, we oc...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Japan Society of Mechanical Engineers
2020-04-01
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| Series: | Mechanical Engineering Journal |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/mej/7/3/7_19-00432/_pdf/-char/en |
| _version_ | 1819013485085851648 |
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| author | Hiroaki MIHARA Tetsuya OKAMOTO Keisuke SUZUKI Takashi NOGUCHI Katsuya HIRATA |
| author_facet | Hiroaki MIHARA Tetsuya OKAMOTO Keisuke SUZUKI Takashi NOGUCHI Katsuya HIRATA |
| author_sort | Hiroaki MIHARA |
| collection | DOAJ |
| description | In the present study, the authors investigate the simplest model of cross-flow impellers, in order to provide the fundamental flow features of cross-flow impellers. The model is a two-dimensional cross-flow impeller with a very-high aspect ratio, and rotates in stationary fluid. More strictly, we occasionally place a splitter plate with minimal influence instead of casings for more precise observations and measurements. Instantaneous measurements of flow-velocity vectors on the mid-span plane are conducted using a CCD camera and a double-pulse YAG laser with a particle-image-velocimetry technique, in addition to conventional flow visualisations and hot-wire-velocimetry measurements. As a result, the authors show the revolutional motion of such an eccentric vortex as a large-scale re-circulating flow structure inside the cross-flow impeller, and reveal the detail of flow features at Reynolds number Re = 300-2500. Furthermore, the authors show the relations between Re and out-flow rate from the impeller. |
| first_indexed | 2024-12-21T02:00:41Z |
| format | Article |
| id | doaj.art-dc09793b0d93430487c83dde7340382f |
| institution | Directory Open Access Journal |
| issn | 2187-9745 |
| language | English |
| last_indexed | 2024-12-21T02:00:41Z |
| publishDate | 2020-04-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Mechanical Engineering Journal |
| spelling | doaj.art-dc09793b0d93430487c83dde7340382f2022-12-21T19:19:38ZengThe Japan Society of Mechanical EngineersMechanical Engineering Journal2187-97452020-04-017319-0043219-0043210.1299/mej.19-00432mejExperimental study on two-dimensional cross-flow impeller with a minimal splitter plate instead of casingsHiroaki MIHARA0Tetsuya OKAMOTO1Keisuke SUZUKI2Takashi NOGUCHI3Katsuya HIRATA4General Building Research Corporation of JapanDepartment of Mechanical Engineering, Doshisha UniversityDepartment of Mechanical Engineering, Doshisha UniversityDepartment of Mechanical Engineering, Doshisha UniversityDepartment of Mechanical Engineering, Doshisha UniversityIn the present study, the authors investigate the simplest model of cross-flow impellers, in order to provide the fundamental flow features of cross-flow impellers. The model is a two-dimensional cross-flow impeller with a very-high aspect ratio, and rotates in stationary fluid. More strictly, we occasionally place a splitter plate with minimal influence instead of casings for more precise observations and measurements. Instantaneous measurements of flow-velocity vectors on the mid-span plane are conducted using a CCD camera and a double-pulse YAG laser with a particle-image-velocimetry technique, in addition to conventional flow visualisations and hot-wire-velocimetry measurements. As a result, the authors show the revolutional motion of such an eccentric vortex as a large-scale re-circulating flow structure inside the cross-flow impeller, and reveal the detail of flow features at Reynolds number Re = 300-2500. Furthermore, the authors show the relations between Re and out-flow rate from the impeller.https://www.jstage.jst.go.jp/article/mej/7/3/7_19-00432/_pdf/-char/encross-flow fancross-flow impellerblowerflow visualisationpiv |
| spellingShingle | Hiroaki MIHARA Tetsuya OKAMOTO Keisuke SUZUKI Takashi NOGUCHI Katsuya HIRATA Experimental study on two-dimensional cross-flow impeller with a minimal splitter plate instead of casings Mechanical Engineering Journal cross-flow fan cross-flow impeller blower flow visualisation piv |
| title | Experimental study on two-dimensional cross-flow impeller with a minimal splitter plate instead of casings |
| title_full | Experimental study on two-dimensional cross-flow impeller with a minimal splitter plate instead of casings |
| title_fullStr | Experimental study on two-dimensional cross-flow impeller with a minimal splitter plate instead of casings |
| title_full_unstemmed | Experimental study on two-dimensional cross-flow impeller with a minimal splitter plate instead of casings |
| title_short | Experimental study on two-dimensional cross-flow impeller with a minimal splitter plate instead of casings |
| title_sort | experimental study on two dimensional cross flow impeller with a minimal splitter plate instead of casings |
| topic | cross-flow fan cross-flow impeller blower flow visualisation piv |
| url | https://www.jstage.jst.go.jp/article/mej/7/3/7_19-00432/_pdf/-char/en |
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