Max Ramgraber - Analytic Element Model

Interactive element. Analytic Element Model with a finite no-flow boundary, extraction well, and injection well (light blue control points) against a Möbius background flow (dark blue control points). The contours correspond to hydraulic potential or hydraulic head. Drag the elements around to see how the solution changes in response. The transparent Möbius flow control point is defined by the other three control points. Interactivity does not work for touch devices.

Analytic Element Model

This element leverages analytic element modelling to illustrate the influence of flow-relevant features on a two-dimensional groundwater flow field. Adjust the following features and observe how the groundwater field changes in response.

The no-flow boundary (dark bar) obstructs groundwater flow through it. As such, this element deforms the flow field so that flow is always parallel to its path. You can reposition this element by moving either of its endpoints.
The injection and extraction wells (light blue circles) are point elements which inject or extract water into the system, and thus act as local sources or sinks of groundwater. Their influence on the flow field is magnified in proximity to the no-flow boundary.
The regional flow can be controlled by repositioning any of the three dark blue circles around the model's circumference. As the regional flow is based on a Möbius transformation as described here, the fourth node's position is controlled by the others'.