000173024 001__ 173024
000173024 005__ 20180317095307.0
000173024 0247_ $$2doi$$a10.1016/j.jfluidstructs.2011.10.001
000173024 022__ $$a0889-9746
000173024 02470 $$2ISI$$a000301161800012
000173024 037__ $$aARTICLE
000173024 245__ $$aCavitation influence on hydroacoustic resonance in pipe
000173024 269__ $$a2011
000173024 260__ $$bElsevier$$c2011
000173024 336__ $$aJournal Articles
000173024 520__ $$aIn pipe systems, pressure and flow fluctuations below cutoff frequency propagate as plane waves along pipes. Depending on the pipe length and propagation velocity, resonance leading to high amplitude pressure fluctuation may occur. At low pressure, cavitation is an important source of fluctuation. Beside its active role in the mechanism of noise generation, the cavitation reflects partially the incoming plane waves. This may modify the values of the eigenfrequencies of the system consisting of the pipe, the contained fluid and the vapor cavity. The influence of cavitation is experimentally investigated in a hydroacoustic resonator: a straight pipe connecting two tanks. At three quarters of the pipe length, a bluff body is placed cross flow to generate periodic vortex wake cavitation in a limited section of the pipe. The analysis of the wall pressure measurements along the hydroacoustic resonator results is performed with the help of a one-dimensional transient model of the pipe including the compliance of the cavities created in the wake of the bluff body. The results of the numerical simulations enable the determination of both the eigenvalues within the resulting system of equations and the mode shape of the pressure fluctuations corresponding to the experimental results.
000173024 6531_ $$aCavitation; Hydraulic machines and systems; Hydroacoustics; Periodic vortex generation; Pressure fluctuations
000173024 700__ $$0243102$$aRuchonnet, Nicolas$$g128646
000173024 700__ $$0243097$$aAlligné, Sébastien$$g178059
000173024 700__ $$aNicolet, Christophe
000173024 700__ $$0241012$$aAvellan, François$$g104417
000173024 773__ $$tJournal of Fluids and Structures
000173024 8564_ $$s1567151$$uhttps://infoscience.epfl.ch/record/173024/files/2011%20Ruchonnet%20JFS%20Cavitation%20influence%20on%20hydroacoustic%20resonance%20in%20pipe.pdf$$yPublisher's version$$zPublisher's version
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000173024 909C0 $$0252135$$pLMH$$xU10309
000173024 917Z8 $$x104417
000173024 937__ $$aEPFL-ARTICLE-173024
000173024 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000173024 980__ $$aARTICLE