On the measurement of wall shear stress with a patch-type micro-fabricated hot-film sensor
In this study, a new patch-type hot-film sensor is devised to measure wall shear stress, and its measurement accuracy is validated. The sensor consists of heaters on a thin polyimide film and a flexible printed circuit. The film is supported by silicone rubber with a hole in it, which forms a cavity...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Japan Society of Mechanical Engineers
2014-09-01
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| Series: | Journal of Fluid Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jfst/9/3/9_2014jfst0029/_pdf/-char/en |
| _version_ | 1830373525563637760 |
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| author | Takuya SAWADA Osamu TERASHIMA Yasuhiko SAKAI Kouji NAGATA Mitsuhiro SHIKIDA Yasumasa ITO Sora MURAMATSU |
| author_facet | Takuya SAWADA Osamu TERASHIMA Yasuhiko SAKAI Kouji NAGATA Mitsuhiro SHIKIDA Yasumasa ITO Sora MURAMATSU |
| author_sort | Takuya SAWADA |
| collection | DOAJ |
| description | In this study, a new patch-type hot-film sensor is devised to measure wall shear stress, and its measurement accuracy is validated. The sensor consists of heaters on a thin polyimide film and a flexible printed circuit. The film is supported by silicone rubber with a hole in it, which forms a cavity under the heating element to improve the response of the sensor. Static and dynamic response tests show that the sensor properly responds to the wall shear stress and that its roll-off frequency is 10 Hz. Results also show that the sensor can measure the time-averaged wall shear stress in a boundary layer of the wall jet and can detect wall shear stress caused by the velocity gradient of the cross-streamwise profile of streamwise velocity in a boundary layer. |
| first_indexed | 2024-12-20T07:20:33Z |
| format | Article |
| id | doaj.art-8c0a15ed4a3a484d8a2a70ed1b04de0c |
| institution | Directory Open Access Journal |
| issn | 1880-5558 |
| language | English |
| last_indexed | 2024-12-20T07:20:33Z |
| publishDate | 2014-09-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Fluid Science and Technology |
| spelling | doaj.art-8c0a15ed4a3a484d8a2a70ed1b04de0c2022-12-21T19:48:41ZengThe Japan Society of Mechanical EngineersJournal of Fluid Science and Technology1880-55582014-09-0193JFST0029JFST002910.1299/jfst.2014jfst0029jfstOn the measurement of wall shear stress with a patch-type micro-fabricated hot-film sensorTakuya SAWADA0Osamu TERASHIMA1Yasuhiko SAKAI2Kouji NAGATA3Mitsuhiro SHIKIDA4Yasumasa ITO5Sora MURAMATSU6Nagoya UniversityNagoya UniversityNagoya UniversityNagoya UniversityNagoya UniversityNagoya UniversityNagoya UniversityIn this study, a new patch-type hot-film sensor is devised to measure wall shear stress, and its measurement accuracy is validated. The sensor consists of heaters on a thin polyimide film and a flexible printed circuit. The film is supported by silicone rubber with a hole in it, which forms a cavity under the heating element to improve the response of the sensor. Static and dynamic response tests show that the sensor properly responds to the wall shear stress and that its roll-off frequency is 10 Hz. Results also show that the sensor can measure the time-averaged wall shear stress in a boundary layer of the wall jet and can detect wall shear stress caused by the velocity gradient of the cross-streamwise profile of streamwise velocity in a boundary layer.https://www.jstage.jst.go.jp/article/jfst/9/3/9_2014jfst0029/_pdf/-char/enwall shear stresshot-film sensormemsboundary layerwall jet |
| spellingShingle | Takuya SAWADA Osamu TERASHIMA Yasuhiko SAKAI Kouji NAGATA Mitsuhiro SHIKIDA Yasumasa ITO Sora MURAMATSU On the measurement of wall shear stress with a patch-type micro-fabricated hot-film sensor Journal of Fluid Science and Technology wall shear stress hot-film sensor mems boundary layer wall jet |
| title | On the measurement of wall shear stress with a patch-type micro-fabricated hot-film sensor |
| title_full | On the measurement of wall shear stress with a patch-type micro-fabricated hot-film sensor |
| title_fullStr | On the measurement of wall shear stress with a patch-type micro-fabricated hot-film sensor |
| title_full_unstemmed | On the measurement of wall shear stress with a patch-type micro-fabricated hot-film sensor |
| title_short | On the measurement of wall shear stress with a patch-type micro-fabricated hot-film sensor |
| title_sort | on the measurement of wall shear stress with a patch type micro fabricated hot film sensor |
| topic | wall shear stress hot-film sensor mems boundary layer wall jet |
| url | https://www.jstage.jst.go.jp/article/jfst/9/3/9_2014jfst0029/_pdf/-char/en |
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