PhD Thesis Emmanuel Obeng Bekoe - Cranfield University

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developed in a mainframe environment, but has been updated on a DOS based
PC.
Figure 3.5 Components and linkages of ACRU modelling system (Shulze,
1995)
An optional Arc View interface has since been incorporated into the modelling
system to facilitate representation of the catchment, extraction of input
parameters, model runs and viewing of the results.
3.4.2 Model Theory
The ACRU manual (Schulze, 1995) has detailed information on the ACRU
Modelling system However, a summary is given in this Section.
The ACRU model has the following properties:
1. It is a physical conceptual model, i.e. it is conceptual in that it conceives of a
system in which important processes and couplings are idealised, and
physical to the degree that physical processes (Figure 3.6) are represented
explicitly. See Annex A for a commentary on Figure 3.6.
2. ACRU is not a parameter fitting or optimising model and variables (rather
than optimised parameters) are estimated from physical characteristics of
the catchment.
Emmanuel Obeng Bekoe Phd Thesis Chapter 3 Catchment-Hydrol,& Model Selection