NDLI: Numerical simulation of the sheet/cloud cavitation around a two-dimensional hydrofoil using a modified URANS approach

Content Provider	Springer Nature Link
Author	Li, Zhong Zheng, Dawei Hong, Feng Ni, Dan
Copyright Year	2017
Abstract	Cavitating flow over a two-dimensional Clark-Y hydrofoil is numerically investigated via a Modified density correction method (MDCM) for turbulence closure to improve the capability of two-phase flow simulation for the k-ε RNG turbulence model. A transport equation model for the local volume fraction of vapor is solved, and a modified version of the Kunz model is used for the condensation and evaporation processes. Simulations have been conducted for various cavitation numbers ranging from non-cavitating to cloud cavitation. We compared the time-averaged lift and drag coefficients, cavitation dynamics, and time-averaged velocity profiles with the available experimental data for the MDCM and Density correction method (DCM). The comparisons between numerical and experimental results show that the MDCM and DCM are capable of capturing the special trends of the lift coefficient at the inception cavitation stage and the drag coefficient at the cloud cavitation stage. The MDCM is more robust and physical than the DCM in predicting the wake flow downstream from the trailing edge. The predicted attached cavities of both models almost show the same trend near the leading edge of the hydrofoil. However, the MDCM predicts more shedding cavity than the DCM in the wake region.
Starting Page	215
Ending Page	224
Page Count	10
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	31
Issue Number	1
e-ISSN	19763824
Language	English
Publisher	Korean Society of Steel Construction
Publisher Date	2017-01-17
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cavitating flow DCM Hydrofoil Numerical simulation Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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