The 12th International Conference on Hydrodynamics
18 – 23 september 2016, Egmond aan Zee, The Netherlands
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EXPERIMENTAL STUDY OF THE FLUID-STRUCTURE INTERACTION NOISE OF THE HYDROFOIL


Go-down ichd2016 Tracking Number 77

Presentation:
Session: Fluid structural inter-actions II
Room: Room 4
Session start: 14:00 Mon 19 Sep 2016

Yingbo Xu   xybhlj@163.com
Affifliation: China Ship Scientific Research Center

yihong Chen   chenyihong@163.com
Affifliation: China Ship Scientific Research Center

Denghai Tang   dhtang0@163.com
Affifliation: China Ship Scientific Research Center


Topics: - Fluid-structural interactions and hydroelasticity

Abstract:

In order to investigate fluid-structure interaction noise of the blade, the non-cavitation noise and the nature frequency of the hydrofoil are studied by experimental methods. The nature frequency of the hydrofoil was obtained in a water tank. The noise was measured under different inflow speeds and different tip constraint conditions in the cavitation tunnel. The results show that there are many peaks in the noise spectra and the frequency of the peak keeps constant with the inflow speed increasing. The frequencies of the peak are different comparing the free tip and the fixed tip of the hydrofoil. The frequencies of the peak are the same to the hydrofoil natural frequency. The natural frequency of the hydrofoil has important effect on the noise. The sound pressure of the peak is closely related to the trailing edge vortex shedding.