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http://dx.doi.org/10.1016/j.ijnaoe.2018.09.002

Experimental and numerical study on the oblique water-entry impact of a cavitating vehicle with a disk cavitator  

Chen, Cheng (School of Marine Science and Technology, Northwestern Polytechnical University)
Yuan, Xulong (School of Marine Science and Technology, Northwestern Polytechnical University)
Liu, Xiyan (School of Marine Science and Technology, Northwestern Polytechnical University)
Dang, Jianjun (School of Marine Science and Technology, Northwestern Polytechnical University)
Publication Information
International Journal of Naval Architecture and Ocean Engineering / v.11, no.1, 2019 , pp. 482-494 More about this Journal
Abstract
In this paper, the oblique water-entry impact of a vehicle with a disk cavitator is studied experimentally and numerically. The effectiveness and accuracy of the numerical simulation are verified quantitatively by the experiments in this paper and the data available in the literature. Then, the numerical model is used to simulate the hydrodynamic characteristics and flow patterns of the vehicle under different entry conditions, and the axial force is found to be an important parameter. The influences of entry angle, entry speed and cavitator area on the axial force are studied. The variation law of the force coefficient and the dimensionless penetration distance at the peak of the axial force are revealed. The research conclusions are beneficial to engineering calculations on the impact force of a vehicle with a disk cavitator over a wide range of water-entry parameters.
Keywords
Vehicle; Oblique water entry; Impact force characteristics; Experimental and numerical analyses;
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