Implicit large eddy simulation of unsteady cloud cavitation around a plane-convex hydrofoil
| Autor: | Xianwu Luo, Bin Ji, Xavier Escaler, Victor Hidalgo, Alvaro Aguinaga |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids, Universitat Politècnica de Catalunya. CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Plane convex
Flow (psychology) Cavitació Enginyeria mecànica [Àrees temàtiques de la UPC] Implicit large eddy simulation (ILES) Mecànica de fluids Fluid mechanics OpenFOAM Simulation Physics Cavitation Q-criterion Oscillation Mechanical Engineering Numerical analysis Mechanics Zwart-Gerber-Belamri cavitation model Condensed Matter Physics Vortex Mechanics of Materials Modeling and Simulation Development (differential geometry) Implicit large eddy simulation unsteady partial cavitation Enginyeria mecànica::Mecànica de fluids [Àrees temàtiques de la UPC] |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| DOI: | 10.1016/S1001-6058(15)60544-3 |
| Popis: | The present paper focuses on the erosive cavitation behavior around a plane convex hydrofoil. The Zwart-Gerber-Belamri cavitation model is implemented in a library form to be used with the OpenFOAM. The implicit large eddy simulation (ILES) is applied to analyze the three dimensional unsteady cavitating flow around a plane convex hydrofoil. The numerical results in the cases under the hydrodynamic-conditions, which were experimentally tested at the high speed cavitation tunnel of the École Polytechnique Fédérale de Lausanne (EPFL), clearly show the sheet cavitation development, the shedding and the collapse of vapor clouds. It is noted that the cavitation evolutions including the maximum vapor length, the detachment and the oscillation frequency, are captured fairly well. Furthermore, the pressure pulses due to the cavitation development as well as the complex vortex structures are reasonably well predicted. Consequently, it may be concluded that the present numerical method can be used to investigate the unsteady cavitation around hydrofoils with a satisfactory accuracy. © 2015 Publishing House for Journal of Hydrodynamics. |
| Databáze: | OpenAIRE |
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