New efficient boundary conditions for incompressible Navier-Stokes equations: A well-posedness result

被引:91
|
作者
Bruneau, CH
Fabrie, P
机构
[1] Mathematiques Appl. de Bordeaux, Université Bordeaux 1
关键词
D O I
10.1051/m2an/1996300708151
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Efficient natural conditions on open boundaries for incompressible flows are derived from a weak formulation of Navier-Stokes equations. Energy estimates in velocity-pressure are established from a mixed formulation and a rigourous proof of existence of solutions is given. As an illustration, the conditions are written down for the flow behind an obstacle in a channel. Moreover, numerical tests have shown the accuracy and robustness of such conditions.
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页码:815 / 840
页数:26
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