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Simulation of water entry of a two-dimension finite wedge with flow detachment

Bao, CM; Wu, GX; Xu, GD; (2016) Simulation of water entry of a two-dimension finite wedge with flow detachment. Journal of Fluids and Structures , 65 pp. 44-59. 10.1016/j.jfluidstructs.2016.05.010. Green open access

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Abstract

A two-dimensional finite wedge entering water obliquely at a prescribed speed is considered through the velocity potential theory for the incompressible liquid. The gravity is also included. The problem is solved by using the boundary element method in the time domain. The method of the stretched coordinate system is adopted at the initial stage. A condition is imposed at the intersection of the free surface and the body surface after flow detachment to allow the liquid to leave the body surface smoothly. A new methodology is developed to treat free jet with free surface on both sides. The auxiliary function method is used to calculate the pressure on the body surface. Detailed results for the free surface shape and pressure distribution are provided, and the effect of physical parameters on water entry is discussed.

Type: Article
Title: Simulation of water entry of a two-dimension finite wedge with flow detachment
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jfluidstructs.2016.05.010
Publisher version: http://dx.doi.org/10.1016/j.jfluidstructs.2016.05....
Language: English
Additional information: Copyright © 2016 Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Water entry, Fully nonlinear boundary conditions, Boundary element method, Stretched coordinate system, Flow detachment, Free jet flow
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1519599
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