Heat transfer enhancement of a channel flow by rotation circular cylinder
Heat transfer measurement has been done for a low speed water channel with an insertion of rotation circular cylinder in order to find an effective way to achieve high heat transfer enhancement by dynamic flow control method. In the present study, a ratio of the gap between the cylinder and heat tra...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2015-02-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/81/823/81_14-00440/_pdf/-char/en |
| _version_ | 1797988648205942784 |
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| author | Norihiro TAKAHASHI Eisaku MORITA Yuhei INOUE Guannan XI Kyoji INAOKA Mamoru SENDA |
| author_facet | Norihiro TAKAHASHI Eisaku MORITA Yuhei INOUE Guannan XI Kyoji INAOKA Mamoru SENDA |
| author_sort | Norihiro TAKAHASHI |
| collection | DOAJ |
| description | Heat transfer measurement has been done for a low speed water channel with an insertion of rotation circular cylinder in order to find an effective way to achieve high heat transfer enhancement by dynamic flow control method. In the present study, a ratio of the gap between the cylinder and heat transfer wall to the cylinder diameter was kept to be 0.6. The diameter based Reynolds number was set for 200 and 400. It was found that the cylinder rotation achieves remarkable heat transfer enhancement. Counter clockwise rotation, the direction of which accelerates the gap flow, intensifies the unsteady vortex in the shear layer above the low speed area downstream the circular cylinder and this enhances the wall heat transfer over the extensive downstream region. Heat transfer enhancement becomes large as the rotation speed becomes higher within the present experimental condition. Clockwise rotation suppresses the vortex formation, although high speed rotation induces the fast flow approaching near the wall and achieves large heat transfer enhancement there. |
| first_indexed | 2024-04-11T08:07:31Z |
| format | Article |
| id | doaj.art-e60d6dfda20e44bb90d62da836878db7 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T08:07:31Z |
| publishDate | 2015-02-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-e60d6dfda20e44bb90d62da836878db72022-12-22T04:35:29ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612015-02-018182314-0044014-0044010.1299/transjsme.14-00440transjsmeHeat transfer enhancement of a channel flow by rotation circular cylinderNorihiro TAKAHASHI0Eisaku MORITA1Yuhei INOUE2Guannan XI3Kyoji INAOKA4Mamoru SENDA5Graduate School of Science and Engineering, Doshisha UniversityGraduate School of Science and Engineering, Doshisha UniversityDaikin Industries Ltd.College of Mechanical Engineering, Nantong UniversityDepartment of Mechanical EngineeringDepartment of Mechanical EngineeringHeat transfer measurement has been done for a low speed water channel with an insertion of rotation circular cylinder in order to find an effective way to achieve high heat transfer enhancement by dynamic flow control method. In the present study, a ratio of the gap between the cylinder and heat transfer wall to the cylinder diameter was kept to be 0.6. The diameter based Reynolds number was set for 200 and 400. It was found that the cylinder rotation achieves remarkable heat transfer enhancement. Counter clockwise rotation, the direction of which accelerates the gap flow, intensifies the unsteady vortex in the shear layer above the low speed area downstream the circular cylinder and this enhances the wall heat transfer over the extensive downstream region. Heat transfer enhancement becomes large as the rotation speed becomes higher within the present experimental condition. Clockwise rotation suppresses the vortex formation, although high speed rotation induces the fast flow approaching near the wall and achieves large heat transfer enhancement there.https://www.jstage.jst.go.jp/article/transjsme/81/823/81_14-00440/_pdf/-char/enheat transferheat transfer enhancementdynaminc flow controlcircular cylindercylinder rotation |
| spellingShingle | Norihiro TAKAHASHI Eisaku MORITA Yuhei INOUE Guannan XI Kyoji INAOKA Mamoru SENDA Heat transfer enhancement of a channel flow by rotation circular cylinder Nihon Kikai Gakkai ronbunshu heat transfer heat transfer enhancement dynaminc flow control circular cylinder cylinder rotation |
| title | Heat transfer enhancement of a channel flow by rotation circular cylinder |
| title_full | Heat transfer enhancement of a channel flow by rotation circular cylinder |
| title_fullStr | Heat transfer enhancement of a channel flow by rotation circular cylinder |
| title_full_unstemmed | Heat transfer enhancement of a channel flow by rotation circular cylinder |
| title_short | Heat transfer enhancement of a channel flow by rotation circular cylinder |
| title_sort | heat transfer enhancement of a channel flow by rotation circular cylinder |
| topic | heat transfer heat transfer enhancement dynaminc flow control circular cylinder cylinder rotation |
| url | https://www.jstage.jst.go.jp/article/transjsme/81/823/81_14-00440/_pdf/-char/en |
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