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大规模打设了塑料排水板的围海造陆区,是一种高度非均质场地,如果应用传统有限元法解这种非均质介质中的地下水流问题,由于单元不能跨越岩性界线,需要精细剖分才能获得较精确解。这样往往使计算时间长,甚至超出普通计算机能力。而多尺度有限元法是针对高度非均质介质中地下水流问题提出的一种解决办法,所以,笔者引入多尺度有限单元法探讨解决围海造陆区工后地下水流模拟。本文通过6个算例来揭示多尺度有限元在模拟此类场地时的可能误差及其适用范围。
If the unit is not able to cross the boundary of lithology, if the traditional finite element method is used to solve the problem of groundwater flow in this heterogeneous medium, the large-scale land reclamation area with plastic drainage board is a highly heterogeneous site. Need to be subdivided to obtain a more exact solution. This tends to make computing a long time, even beyond ordinary computer capabilities. However, the multi-scale finite element method is a solution to the problem of groundwater flow in highly inhomogeneous media. Therefore, the author introduced the multi-scale finite element method to solve the post-construction groundwater flow simulation in the reclamation area. In this paper, six examples are used to reveal the possible errors and their applicability of multiscale finite element simulations for such sites.