An Analysis Platform for Multiscale Hydrogeologic Modeling with Emphasis on Hybrid Multiscale Methods
An Analysis Platform for Multiscale Hydrogeologic Modeling with Emphasis on Hybrid Multiscale Methods
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DOI：
10.1111/gwat.12179
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发表时间：
2015
期刊：
影响因子：
2.6
通讯作者：
Timothy Scheibe;E. M. Murphy;Xingyuan Chen;A. Rice;K. Carroll;B. Palmer;A. Tartakovsky;I. Battiato;B. Wood
中科院分区：
文献类型：
--
作者：
Timothy Scheibe;E. M. Murphy;Xingyuan Chen;A. Rice;K. Carroll;B. Palmer;A. Tartakovsky;I. Battiato;B. Wood
水文地质建模者面临的最重大挑战之一是空间尺度和时间尺度之间的差异，在该尺度下，可以最好地理解和量化基本流动、运输和反应过程（例如，微观到孔隙尺度和秒到天）以及需要实际模型预测的时间（例如，羽流到含水层规模，年到世纪）。虽然水文地质问题的多尺度性质得到了广泛的认可，但计算和表征方面的技术限制限制了大多数实际建模工作，使其只能粗略地表示非均质特性和过程。对于一些现代问题，必要的简化程度是这样的，模型参数可能会失去物理意义和模型预测能力是值得怀疑的任何条件以外的模型被校准。最近，有广泛的科学和工程学科的模拟方法，更严格地考虑到多尺度性质的系统感兴趣的广泛兴趣。在这篇文章中，我们回顾了一些这样的方法，并提出了一个分类方案，用于定义不同类型的多尺度模拟方法和这些类别的问题，它们是最适用的。我们的分类方案的流程图（多尺度分析平台），并定义了几个不同的图案的多尺度模拟。在每个主题，成员的方法进行了审查，并讨论了示例应用。我们把注意力集中在混合多尺度方法，其中两个或多个模型与不同的物理描述在根本上不同的尺度直接耦合在一个单一的模拟。最近，这些方法已开始被应用于地下水流和运输模拟，我们讨论这些应用程序的背景下，我们的分类方案。随着计算和表征能力的不断提高，我们设想混合多尺度建模将变得更加普遍，并且在不久的将来也是传统单尺度模型的可行替代方案。
One of the most significant challenges faced by hydrogeologic modelers is the disparity between the spatial and temporal scales at which fundamental flow, transport, and reaction processes can best be understood and quantified (e.g., microscopic to pore scales and seconds to days) and at which practical model predictions are needed (e.g., plume to aquifer scales and years to centuries). While the multiscale nature of hydrogeologic problems is widely recognized, technological limitations in computation and characterization restrict most practical modeling efforts to fairly coarse representations of heterogeneous properties and processes. For some modern problems, the necessary level of simplification is such that model parameters may lose physical meaning and model predictive ability is questionable for any conditions other than those to which the model was calibrated. Recently, there has been broad interest across a wide range of scientific and engineering disciplines in simulation approaches that more rigorously account for the multiscale nature of systems of interest. In this article, we review a number of such approaches and propose a classification scheme for defining different types of multiscale simulation methods and those classes of problems to which they are most applicable. Our classification scheme is presented in terms of a flowchart (Multiscale Analysis Platform), and defines several different motifs of multiscale simulation. Within each motif, the member methods are reviewed and example applications are discussed. We focus attention on hybrid multiscale methods, in which two or more models with different physics described at fundamentally different scales are directly coupled within a single simulation. Very recently these methods have begun to be applied to groundwater flow and transport simulations, and we discuss these applications in the context of our classification scheme. As computational and characterization capabilities continue to improve, we envision that hybrid multiscale modeling will become more common and also a viable alternative to conventional single‐scale models in the near future.