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Title: Steady-state particle tracking in the object-orientated regional groundwater model ZOOMQ3D
Author: C.R. Jackson
Document Type: Monograph
Abstract:
This report describes the development of a steady-state particle tracking code for use in conjunction with the object-oriented regional groundwater flow model, ZOOMQ3D (Jackson, 2001). Like the flow model, the particle tracking software, ZOOPT, is written using an object-oriented approach to promote its extensibility and flexibility. ZOOPT enables the definition of steady-state pathlines in three dimensions. Particles can be tracked in both the forward and reverse directions enabling the rapid definition of borehole catchments, recharge and discharge areas and the visualisation of groundwater flow fields, for example. Pathlines are defined using the semi-analytical method (Pollock, 1988), however, around particular model features the Runge-Kutta technique is implemented in order to solve some specific problems associated with particle tracking. The problem of particle termination at weak sink nodes is solved by the application of the special velocity interpolation scheme presented by Zheng (1994). This approach enables the definition of borehole catchments around wells that induce weak sinks which is not possible with many other widely used particle tracking codes.
Publisher: Environment Agency
Publication Date: 2002
Publication Place: Bristol
Subject Keywords: Groundwater; Flow rate; Modelling
Extent: 32
Permalink: http://www.environmentdata.org/archive/ealit:1765
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