A fundamental study of disappearance phenomenon of partial cavitation on the NACA 16012 hydrofoil

Yoshiki Oodaira, Wakana Tsuru, Satoshi Watanabe, Yuka Iga

Research output: Contribution to conferencePaper

Abstract

For the purpose of understanding of the basic characteristics of cavitation, a number of studies have been conducted using the hydrofoil. An experimental study using NACA16012 hydrofoil was conducted in order to investigate the relationship between cavitation and boundary layer. In the study, it was reported that partial cavitation disappeared in spite of decreasing cavitation number. The authors have reproduced the disappearance phenomenon using the same hydrofoil in the previous study at Tohoku University. Details of the disappearance phenomenon have not been described in the article, and research related to the phenomenon has never carried out and clarified by other researchers. Therefore, in the present study, reproduction experiment of the disappearance phenomenon is conducted with the cavitation tunnel at Kyushu University using NACA16012 hydrofoil and in order to clarify the mechanism of the disappearance phenomenon, lift and drag force and Pressure distribution is measured in non-cavitation condition. As the experimental result, the disappearance phenomenon is observed and the boundary layer characteristics are different from other region the cavitation disappearing phenomenon occurs. In addition, by analyzing the Pressure fluctuation at downstream of the hydrofoil, it was found that the disappearance phenomenon is observed in a certain frequency bands of cloud shedding.

Original languageEnglish
Publication statusPublished - Jan 1 2017
Event17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017 - Maui, United States
Duration: Dec 16 2017Dec 21 2017

Conference

Conference17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017
CountryUnited States
CityMaui
Period12/16/1712/21/17

Fingerprint

Hydrofoils
Cavitation
Boundary layers
Pressure distribution
Frequency bands
Drag
Tunnels

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Oodaira, Y., Tsuru, W., Watanabe, S., & Iga, Y. (2017). A fundamental study of disappearance phenomenon of partial cavitation on the NACA 16012 hydrofoil. Paper presented at 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017, Maui, United States.

A fundamental study of disappearance phenomenon of partial cavitation on the NACA 16012 hydrofoil. / Oodaira, Yoshiki; Tsuru, Wakana; Watanabe, Satoshi; Iga, Yuka.

2017. Paper presented at 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017, Maui, United States.

Research output: Contribution to conferencePaper

Oodaira, Y, Tsuru, W, Watanabe, S & Iga, Y 2017, 'A fundamental study of disappearance phenomenon of partial cavitation on the NACA 16012 hydrofoil' Paper presented at 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017, Maui, United States, 12/16/17 - 12/21/17, .
Oodaira Y, Tsuru W, Watanabe S, Iga Y. A fundamental study of disappearance phenomenon of partial cavitation on the NACA 16012 hydrofoil. 2017. Paper presented at 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017, Maui, United States.
Oodaira, Yoshiki ; Tsuru, Wakana ; Watanabe, Satoshi ; Iga, Yuka. / A fundamental study of disappearance phenomenon of partial cavitation on the NACA 16012 hydrofoil. Paper presented at 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017, Maui, United States.
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