Flow-Induced Noise of Shedding Partial Cavitation on a Hydrofoil

Ganesh, Harish; Wu, Juliana; Ceccio, Steven L.

doi:10.1007/978-3-319-76780-2_4

Cited by 1 publication

(2 citation statements)

References 6 publications

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“…The magnitude of acoustic power spectral density for σ = 1.075 and σ = 1.175 were the same, whereas that for σ = 0.975 was significantly higher. The results of PSD had good agreement with the experimental research from Harish Ganesh [19], that the magnitude of multimodal behavior increases with decreasing cavitation number. The difference was largely due to its drastic pressure fluctuation caused by extending and retreating of cavitation on the leading edge.…”

Section: Influences Of Different Sheet Cavitation Numbersupporting

confidence: 82%

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Investigation of Cavitation Noise in Cavitating Flows around an NACA0015 Hydrofoil

Wang

Zou

et al. 2019

Applied Sciences

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To provide theoretical basis for cavitation noise control, the cavitation evolution around a hydrofoil and its induced noise were numerically investigated. A modified turbulence model and Zwart cavitation model were employed to calculate the flow field and predict the cavitation phenomenon accurately. Then, the acoustic analogy method based on the Ffowcs Williams-Hawking (FW-H) equation was applied to analyze the cavitation-induced noise. Seven cavitation numbers were selected for analysis. Acoustic power spectral density (PSD) and acoustic pressure were investigated to establish the relationship between cavitation number and their acoustic characteristics. It was indicated that as cavitation number decreases, cavitation cycle length gets shorter and the magnitude of acoustic power spectral density increases dramatically. One peak value of acoustic power spectral density induced by the extending and retracting of leading-edge cavitation can be obtained under sheet cavitation conditions, while under cloud cavitation, two peak values of acoustic power spectral density can be obtained and are induced by superposition from leading-edge cavitation and trailing vortex.

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Section: Influences Of Different Sheet Cavitation Numbersupporting

confidence: 82%

“…For point U5, two peak values at 17.09 Hz and 34. 19 Hz are the results of superposition from leading edge cavitation and trailing vortex. For point B6, only one peak value at 17.09 Hz can be observed.…”

Section: Cloud Cavitation Flow-induced Noisementioning

confidence: 99%

Investigation of Cavitation Noise in Cavitating Flows around an NACA0015 Hydrofoil

Wang

Zou

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

Flow-Induced Noise of Shedding Partial Cavitation on a Hydrofoil

Cited by 1 publication

References 6 publications

Investigation of Cavitation Noise in Cavitating Flows around an NACA0015 Hydrofoil

Investigation of Cavitation Noise in Cavitating Flows around an NACA0015 Hydrofoil

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