Modelling

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tools to predict groundwater cycle and migration of water

soluble substances

Click for Technical Summary

Groundwater modelling is being used as a tool

to make decisions and develop management strategies for

groundwater protection planning. A model is a simplification

of reality in order to aid in the understanding of and/or

predict the outcomes of the real system. Aconceptualis a simplified representation of how the real

model

system is believed to behave based on a qualitative analysis

of field data. A quantitative conceptual model includes

preliminary calculations for key processes.Mathematicalare distinguished as follows:

models

Analytical model:exact mathematical solutions

of the flow and/or transport equation for all points in time

and space.

Deterministic model:A model where all elements

and parameters of the model are assigned unique values.

Numerical model:Solution of the flow and/or

transport equation using numerical approximations, i.e.

inputs are specified at certain points in time and space

which allows for a more realistic variation of parameters

than in analytical models. However, outputs are also produced

only at these same specified points in time and space.

Probabilistic model:An aggregation of model

realisations, where the input parameters to each realisation

are characterised by probability distributions.

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