The jet flows have been applied to various fields to control the flow separation. Over the last decade, several studies have investigated synthetic jets. However, there are still many clarifications needed, including details of the structure and Coanda effect of synthetic jets. The present study clarifies some fundamental flow characteristics of free synthetic jets and synthetic jets near a rigid boundary by conducting an experiment and numerical simulations. As the main results, it is found that the velocity distribution of free synthetic jets depends on K = Re/S2 (the ratio of the Reynolds number to the square of the Stokes number) and can be identified by the maximum velocity at the centerline and the jet half-width. Flow visualization is carried out applying the smoke wire method. In addition, it is confirmed that the flow characteristics of the synthetic jet near a rigid boundary and re-attachment length of the synthetic jet are determined not only by H1/b0 (normalized step heights) but also K.
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ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
July 24–29, 2011
Hamamatsu, Japan
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4440-3
PROCEEDINGS PAPER
Study on the Flow Characteristics of Synthetic Jets Near a Rigid Plane Boundary Available to Purchase
Ryota Tsunoda,
Ryota Tsunoda
Kogakuin University, Tokyo, Japan
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Koichi Nishibe,
Koichi Nishibe
Kogakuin University, Tokyo, Japan
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Yuki Fujita,
Yuki Fujita
Kogakuin University, Tokyo, Japan
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Kotaro Sato,
Kotaro Sato
Kogakuin University, Tokyo, Japan
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Kazuhiko Yokota,
Kazuhiko Yokota
Aoyama Gakuin University, Sagamihara, Kanagawa, Japan
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Toru Koso
Toru Koso
Kyushu University, Kasuga, Fukuoka, Japan
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Ryota Tsunoda
Kogakuin University, Tokyo, Japan
Koichi Nishibe
Kogakuin University, Tokyo, Japan
Yuki Fujita
Kogakuin University, Tokyo, Japan
Kotaro Sato
Kogakuin University, Tokyo, Japan
Kazuhiko Yokota
Aoyama Gakuin University, Sagamihara, Kanagawa, Japan
Toru Koso
Kyushu University, Kasuga, Fukuoka, Japan
Paper No:
AJK2011-16032, pp. 2993-2998; 6 pages
Published Online:
May 25, 2012
Citation
Tsunoda, R, Nishibe, K, Fujita, Y, Sato, K, Yokota, K, & Koso, T. "Study on the Flow Characteristics of Synthetic Jets Near a Rigid Plane Boundary." Proceedings of the ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D. Hamamatsu, Japan. July 24–29, 2011. pp. 2993-2998. ASME. https://doi.org/10.1115/AJK2011-16032
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