Original scientific paper

https://doi.org/10.21278/brod69406

NUMERICAL SIMULATION OF THE OBLIQUE WATER ENTRY OF WEDGES WITH VORTEX SHEDDING

Xiaobin Yang ; College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001 China
Guodong Xu ; College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001 China

Abstract

The hydrodynamic problem of the water entry of wedges with oblique velocity has been investigated numerically. The simulations of the interaction of the wedge and initial calm surface are carried out by solving the Reynolds-averaged Navier-Stokes equations (RANS). The overset mesh technique is introduced and the air-water interface is tracked using the method of Volume of Fluid (VOF). The water entries of wedges with various deadrise angles at different oblique velocities are simulated. A noticeable vortex flow and low pressure area on the leeward side of the wedge have been observed. The evolution of vortex and the pressure distribution over the wedge surface are analysed. The local vortex flow affects the local hydrodynamic pressure significantly.

Keywords

Numerical simulation; oblique water entry; vortex shedding; overset mesh technique;

Hrčak ID:

208961

URI

https://hrcak.srce.hr/208961

Publication date:

31.12.2018.

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