Experimental investigation of vibrations induced by cavitating flows around a 3D hydrofoil with tip clearance

9th Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, Flow-Induced Vibration & Noise

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Title Experimental investigation of vibrations induced by cavitating flows around a 3D hydrofoil with tip clearance
 
Creator Yu Zhao; Beijing Institute of Mechanical & Electrical Engineering
Jian Zhang; Beijing Institute of Mechanical & Electrical Engineering
Jing Wang; Beijing Institute of Mechanical & Electrical Engineering
Xiaolong Cao; Beijing Institute of Mechanical & Electrical Engineering
 
Subject cloud cavitaton; flow induced vibration; tip clearance
 
Description Experimental investigations of the cavitation-induced vibrations and the correlations with the flow patterns are taken. The experiment is conducted in a closed-loop cavitation tunnel. Both the high speed camera system and the dynamic strain gauge based vibration measurement system are utilized to capture the cavitation patterns and the vibration. Based on the experimental results following conclusions can be drawn. Firstly, in the case with relatively large cavitation number, the dominating frequency of the hydrofoil is about 160Hz and changes slightly compared with that in fully wetted case. This implies the stable leading edge cavity has little effect on the vibration. Secondly, in the case with relatively small cavitation number, the dominating frequency is about 20Hz and quite different from that in fully wetted case. The unsteady shedding process of the leading edge cavity is the main reason.
 
Publisher Paper Management System for FIV2018
 
Contributor
 
Date 2018-05-16 17:17:13
 
Type Peer-reviewed Paper
experimental
 
Format application/pdf
 
Identifier http://www.fiv2018.com/ocs/index.php/fiv2018/fivcan/paper/view/115
 
Source Paper Management System for FIV2018; FIV2018 Conference
 
Language en
 
Rights Authors who submit to this conference agree to the following terms:<br /> <strong>a)</strong> Authors retain copyright over their work, while allowing the conference to place this unpublished work under a <a href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution License</a>, which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship and its initial presentation at this conference.<br /> <strong>b)</strong> Authors are able to waive the terms of the CC license and enter into separate, additional contractual arrangements for the non-exclusive distribution and subsequent publication of this work (e.g., publish a revised version in a journal, post it to an institutional repository or publish it in a book), with an acknowledgement of its initial presentation at this conference.<br /> <strong>c)</strong> In addition, authors are encouraged to post and share their work online (e.g., in institutional repositories or on their website) at any point before and after the conference.
 

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