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| Hydrodynamic analysis of viscous water wave caused by ship moving in ship chamber |
| Received:January 21, 2007 |
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| DOI：10.7511/jslx20095020 |
| KeyWord:FEM shallow water equation viscosity grid-moving method |
| Author | Institution |
| 董俊哲 |
大连理工大学 工业装备结构分析国家重点实验室,大连 |
| 李宝元 |
大连理工大学 工业装备结构分析国家重点实验室,大连 |
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| Abstract: |
| In this paper, the shallow water equation and FEM are used to analyse the horizontal movement, flicker and the least clearance between the ship bottom and the ship-chamber when the ship is driven into and out of the chamber. The shallow water equation used in the paper including not only the bottom friction part, but also the viscosity part, which, on one hand, makes the equation more similar to physical problem, on the other hand, increases the stability of results. The paper gives out the non-reflection boundary conditions for open boundaries, which move with non-inertial coordinate system; the method to solve pressure of pressed surface with Poisson equation and the method to solve wave height of free surface with continuity equation. As to the engineering condition of ship elevator for Three Gorges, a series of calculation are carried out, show stable computations, and provide reasonable results. |
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