A numerical study of unsteady cavitation on a hydrofoil by les and URANS method

A numerical study of unsteady cavitation on a hydrofoil by les and URANS method

Li, Zi Ru (Wuhan University of Technology)
Zhang, Guang Ming (Wuhan University of Technology)
He, Wei Dong (Wuhan University of Technology)
van Terwisga, T.J.C. (TU Delft Ship Hydromechanics and Structures; Maritime Research Institute Netherlands (MARIN))

Farhat, M. (editor)
Müller, A. (editor)

2015

In this paper, the unsteady cavitation phenomena on a NACA0015 hydrofoil is numerically simulated by unsteady Reynolds-Averaged Navier-Stokes (URANS) method and Large Eddy Simulation (LES) in single-fluid approaches to multiphase modelling, respectively. It is observed that the large-scale structures and characteristic periodic shedding predicted by the URANS with the modified SST k-ω turbulence model show a good qualitative match with the experimental observations but with quantitative discrepancies, such as a different cavity length and volume, and a different location of shedding. Compared to the URANS results, the LES results reproduce more details of unsteady dynamics with an improved quantitative agreement.

http://resolver.tudelft.nl/uuid:6500a592-c3a8-4f30-93e5-43474f0ed815

https://doi.org/10.1088/1742-6596/656/1/012157

IOP Publishing

Proceedings 9th International Symposium on Cavitation (CAV2015)

9th international symposium on cavitation, CAV 2015, Lausanne, Switzerland, 2015-12-06 → 2015-12-10, Bristol

Journal of Physics: Conference Series, 1742-6588, 656 (1)

Institutional Repository

conference paper

© 2015 Zi Ru Li, Guang Ming Zhang, Wei Dong He, T.J.C. van Terwisga