New Variational Inequality Formulation for Seepage Problems With Free Surfaces
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摘要: 建立了一个新的有自由面渗流问题的变分不等式提法,提法通过将潜在出渗面上的边界条件提为Signorini型条件,从而从理论上消除了出渗点的奇性并解决了出渗点的定位问题.与其它变分不等式提法相比,该提法有更好的数值稳定性.Abstract: A new variational inequality formulation for seepage problems with free surfaces was presented, in which a boundary condition of Signorini's type was prescribed over the potential seepage surfaces. This made the singularity of seepage points eliminated and the location of seepage points determined. Compared to other variational formulations, the proposed formulation owns better numerical stability.
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Key words:
- free boundary problem /
- seepage /
- variational inequality /
- finite element
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