The arti®cial boundary conditions for computing the ̄ow around a submerged body
نویسندگان
چکیده
In this paper we consider the numerical simulations of the steady linearized potential ̄ow around a body which moves in a liquid of ®nite constant depth at constant speed and distance below a free surface. Two vertical segments are introduced as the arti®cial boundary to limit the unbounded physical domain to a bounded computational domain. A series of approximate arti®cial boundary conditions at the given arti®cial boundary are designed by imposing the continuity of the solution and its normal derivative. Then the original problem is reduced to a problem de®ned in a bounded computational domain, which is solved numerically by the ®nite element method. The numerical examples show that our arti®cial boundary conditions are very eective. Ó 2000 Elsevier Science S.A. All rights reserved.
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