A study on propeller noise source localization in a cavitation tunnel

Park, Cheolsoo; Seol, Hanshin; Kim, Kwangsoo; Seong, Woojae

doi:10.1016/j.oceaneng.2009.04.005

Cited by 45 publications

(22 citation statements)

References 8 publications

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“…Shen and Dimotakis [1], Kawanami et al [2], and Wang et al [3] experimentally investigated cavitating flow around submerged hydrofoils. Park et al [4] proposed noise source localization techniques for rotating propellers, by using source strength estimation methods in swallow water conditions. Kopriva et al [5] and Karn et al [6] studied the dynamics of ventilated cavitation with steady and periodic gust flows.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation into Effects of Viscous Flux Vectors on Hydrofoil Cavitation Flow and Its Radiated Flow Noise

2018

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Abstract:In this study, cavitation flow around a hydrofoil and its radiated hydro-acoustic fields were numerically investigated, with an emphasis on the effects of viscous flux vectors. The full three-dimensional unsteady compressible Reynolds-averaged Navier-Stokes equations were numerically solved. The mass transfer model was adopted to model phase changes between liquid water and vapor. To resolve the numerical instability problem arising from the rapid changes in local density and speed of sound of the mixture, the preconditioning and dual-time stepping methods were employed. The filter-based turbulent model was applied to resolve the unstable cavitation flow field more accurately. In splitting the viscous terms, three approaches for dealing with viscous flux vectors were considered: the so-called viscous lagging, full viscous, and thin-layer models. Radiated hydro-acoustic waves were predicted by applying the Ffowcs Williams and Hawkings equations. The effects of the viscous flux vectors on the predicted flow fields and its radiated noise were then examined by comparing the hydro-dynamic forces, velocity distribution, volume fraction, far-field sound directivities, and sound spectrum of the three approaches. The results revealed that the thin-layer model can provide predictions as accurate as the full viscous model, but required less computational time.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation into Effects of Viscous Flux Vectors on Hydrofoil Cavitation Flow and Its Radiated Flow Noise

2018

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“…Emin et al [27], did an experimental study into the effect of FR coating on the efficiency, noise and cavitation characteristics of a propeller. Park et al [28], studied noise source localization in a cavitation tunnel. Bagheri et al [29] predicted marine propeller noise under cavitating and noncavitating conditions by experimental and numerical methods.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 4 is depicted total Sound Pressure above-mentioned studies [24][25][26][27][28][29], propeller noise was just measured in cavitation tunnel. Cavitation decrease has many effects on reducing propeller noise.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on the Effect of IS700 Coating on the Cavitation Inception and Development, and Noise Reduction of a Marine Propeller

Mr¹,

Ms²,

Mehdigholi³

2017

J Appl Mech Eng

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In this paper, cavitation inception and development conditions are studied for five-blade propellers by experiments carried out in cavitation tunnel. Propeller noise is measured in different operating conditions for uncoated and coated propellers and also, the effects of silicone foul release (FR) coating, inter sleek 700 (IS700), are investigated on the cavitation delay and noise reduction of a marine propeller in cavitation tunnel. Finally, results are presented in low advance coefficients for cavitation inception and development, and noise reduction. These results can be applied as a reference for validating this propeller model in numerical simulations.

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“…Due to the induced change to the pressure distribution on the blades this phenomenon also has an effect on periodic cavitation. This fluctuation of cavitation volume will act as a strong monopole noise source (Park et al 2009, Seol et al 2005, Salvatore & Ianniello 2002). This may also be expected to be accompanied by contributions from higher order acoustic sources, particularly for smaller source-receiver distances (Seol 2013).…”

Section: Introductionmentioning

confidence: 99%

Feasibility study into a computational approach for marine propeller noise and cavitation modelling

2016

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There is increased interest in the ability to predict the noise associated with commercial ship propellers. Key components of the computational analysis process are considered for two test cases and the future direction in resolving the associated challenges is presented. Firstly, the Potsdam Propeller Test Case is used to compute tonal blade passage noise using the Ffowcs Williams-Hawkings acoustic analogy. Cavitation extents predicted using the Sauer and Schnerr mass transfer model agree well with the experiment but show little unsteadiness due to URANS being used. A complementary study of initial results from the study of cavitation noise modelling attempt are presented for a NACA0009 section, used as a simplified representation of a propeller blade. Large Eddy Simulation and FW-H acoustic analogy are used in order to estimate the cavitation-induced noise. Results indicate that the discussed approach provides the means for identifying low-frequency noise generation mechanisms in the flow, but does not allow for the fine-scale bubble dynamics or shockwave formation to be resolved. It is concluded that the discussed approach is a viable option to predict large parts of the marine propeller noise spectra but still further work is needed in order to account for the broadband components.

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A study on propeller noise source localization in a cavitation tunnel

Cited by 45 publications

References 8 publications

Numerical Investigation into Effects of Viscous Flux Vectors on Hydrofoil Cavitation Flow and Its Radiated Flow Noise

Numerical Investigation into Effects of Viscous Flux Vectors on Hydrofoil Cavitation Flow and Its Radiated Flow Noise

An Experimental Study on the Effect of IS700 Coating on the Cavitation Inception and Development, and Noise Reduction of a Marine Propeller

Feasibility study into a computational approach for marine propeller noise and cavitation modelling

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