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A Level Set Immersed Boundary Method for Water Entry and Exit

Communications in Computational Physics 2010年第7期8卷 265-288页

作者： Yali Zhang Qingping Zou Deborah Greaves Dominic Reeve Alison Hunt-Raby David Graham Phil James Xin Lv School of Marine Science and Engineering University of PlymouthUnited KingdomPL48AA School of Mathematics and Statistics University of PlymouthUnited KingdomPL48AA

The interaction between free surface flow and structure is investigated using a new level set immersed boundary *** incorporation of an improved immersed boundary method with a free surface capture scheme implemented in a Navier-Stokes solver allows the interaction between fluid flow with free surface and moving body/bodies of almost arbitrary shape to be modelled.A new algorithm is proposed to locate exact forcing points near solid boundaries,which provides an accurate numerical *** discretized linear system of the Poisson pressure equation is solved using the Generalized Minimum Residual(GMRES)method with incomplete LU *** flow past a cylinder at Reynolds number Re=100 is modelled using the present model and results agree well with the experiment and numerical data in the *** exit and entry of a cylinder at the prescribed velocity is also *** predicted slamming coefficient is in good agreement with experimental data and previous numerical simulations using a ComFlow *** vertical slamming force and pressure distribution for the free falling wedge is also studied by the present model and comparisons with available theoretical solutions and experimental data are made.

关键词： Level set method immersed boundary method slamming coefficient water entry and exit free surface fluid-structure interaction

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