Numerical Analysis of the Turbulent Flow Structure Induced by the Cavitation Shedding using LES

To analyze the interaction between the turbulent flow structure with the cavitation shedding dynamics, a three-dimensional unsteady cavitating turbulent flow around the three-dimension NACA009 hydrofoil is investigated in this study. The cavitating flow in has been modeled with a homogeneous mixture...

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Bibliographic Details
Published in:	Journal of Applied Fluid Mechanics Vol. 10; no. 3; pp. 933 - 946
Main Authors:	Kanfoudi, H., Bellakhall, G., Ennouri, M., Bel Hadj Taher, A., Zgoll, R.
Format:	Journal Article
Language:	English
Published:	Isfahan Isfahan University of Technology 01-05-2017
Subjects:	Cavitation Clouds Computational fluid dynamics Fluid flow Homogeneous mixtures Hydrofoils NACA0009 hydrofoil; Sheet/cloud cavitation; LES; Cavitation; Vortex interaction; Unsteady flow; Fluid structure; Pressure fluctuations Numerical analysis Shedding Three dimensional flow Turbulent flow
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Summary:	To analyze the interaction between the turbulent flow structure with the cavitation shedding dynamics, a three-dimensional unsteady cavitating turbulent flow around the three-dimension NACA009 hydrofoil is investigated in this study. The cavitating flow in has been modeled with a homogeneous mixture of liquid and vapor using LES. The interaction between the cavitation and the fluid vortex is analyzed and discussed. The results demonstrate that the vortex stretching is mainly in the center of the cloud cavity and changes quasi-periodically as the cloud cavity evolves. As a result, the mechanism of the inception of cavitation, re-entrant jet and cavitation cloud shedding are accurately captured and predicted by LES in accordance with the experiment data.
ISSN:	1735-3572 1735-3645
DOI:	10.18869/acadpub.jafm.73.240.27384