Numerical Modeling of Unsteady Cavitating Flows around a Stationary Hydrofoil
Joint Authors
Ducoin, Antoine
Huang, Biao
Young, Yin Lu (Julie)
Source
International Journal of Rotating Machinery
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-08-07
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
The objective of this paper is to evaluate the predictive capability of three popular transport equation-based cavitation models for the simulations of partial sheet cavitation and unsteady sheet/cloud cavitating flows around a stationary NACA66 hydrofoil.
The 2D calculations are performed by solving the Reynolds-averaged Navier-Stokes equation using the CFD solver CFX with the k-ω SST turbulence model.
The local compressibility effect is considered using a local density correction for the turbulent eddy viscosity.
The calculations are validated with experiments conducted in a cavitation tunnel at the French Naval Academy.
The hydrofoil has a fixed angle of attack of α=6° with a Reynolds number of Re = 750,000 at different cavitation numbers σ.
Without the density modification, over-prediction of the turbulent viscosity near the cavity closure reduces the cavity length and modifies the cavity shedding characteristics.
The results show that it is important to capture both the mean and fluctuating values of the hydrodynamic coefficients because (1) the high amplitude of the fluctuations is critical to capturing the extremes of the loads to ensure structural safety and (2) the need to capture the frequency of the fluctuations, to avoid unwanted noise, vibrations, and accelerated fatigue issues.
American Psychological Association (APA)
Ducoin, Antoine& Huang, Biao& Young, Yin Lu (Julie). 2012. Numerical Modeling of Unsteady Cavitating Flows around a Stationary Hydrofoil. International Journal of Rotating Machinery،Vol. 2012, no. 2012, pp.1-17.
https://search.emarefa.net/detail/BIM-455229
Modern Language Association (MLA)
Ducoin, Antoine…[et al.]. Numerical Modeling of Unsteady Cavitating Flows around a Stationary Hydrofoil. International Journal of Rotating Machinery No. 2012 (2012), pp.1-17.
https://search.emarefa.net/detail/BIM-455229
American Medical Association (AMA)
Ducoin, Antoine& Huang, Biao& Young, Yin Lu (Julie). Numerical Modeling of Unsteady Cavitating Flows around a Stationary Hydrofoil. International Journal of Rotating Machinery. 2012. Vol. 2012, no. 2012, pp.1-17.
https://search.emarefa.net/detail/BIM-455229
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-455229