Abstract A new multi-scale groundwater modelling methodology is presented to simulate pumped water levels in abstraction boreholes within regional groundwater models, providing a robust tool for assessing the sustainable yield of supply boreholes and improving our understanding of groundwater availability during drought. A 3D borehole-scale model, which solves the Darcy-Forchheimer equation in cylindrical co-ordinates to simulate both linear and non-linear radial flow to a borehole in a heterogeneous aquifer, is embedded within a Cartesian grid, using a hybrid radial-Cartesian finite difference method. The local-scale model is coupled to a regional groundwater model, ZOOMQ3D, using the OpenMI model linkage software, providing a flexible and efficient tool for assessing the behaviour of a groundwater source within its regional hydrogeological context during historic droughts and under climate change. The advantages of the new method are demonstrated through application to a Chalk supply borehole in the UK.

中文翻译：

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用于评估多尺度复杂性对地下水源产量影响的综合建模方法

摘要 提出了一种新的多尺度地下水建模方法来模拟区域地下水模型中抽取钻孔中的抽水水位，为评估供应钻孔的可持续产量和提高我们对干旱期间地下水可用性的理解提供了一个强大的工具。一个 3D 钻孔比例模型，在圆柱坐标中求解 Darcy-Forchheimer 方程以模拟线性和非线性径向流到非均质含水层钻孔，该模型嵌入笛卡尔网格中，使用混合径向笛卡尔坐标系有限差分法。局部尺度模型与区域地下水模型 ZOOMQ3D 耦合，使用 OpenMI 模型联动软件，在历史性干旱和气候变化期间，为评估地下水源在其区域水文地质背景下的行为提供了一种灵活有效的工具。通过在英国的 Chalk 供应钻孔中的应用，证明了新方法的优势。