Modelling dispersion in complex open channel flows:2. Fuzzy calibration

Hankin, B. G. and Beven, Keith J. (1998) Modelling dispersion in complex open channel flows:2. Fuzzy calibration. Stochastic Hydrology and Hydraulics, 12 (6). pp. 397-412. ISSN 1435-151X

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Abstract

Part 1 of this study assessed the effectiveness of dispersion models based around random particle tracking (RPT) applied an overbank flow in the Flood Channel Facility at HR Wallingford. Several of the RPT models that were used predicted the mixing behaviour of the tracer in the complex channel flow to within an acceptable accuracy. If there is no uniqueness in the model structure which can be used to represent the true system to within the limitations of the available observations, then this implies an inherent degree of ambiguity in our knowledge of the physically based model structure. This suggests that we should be less forthright in the optimisation of each individual model structure, and perhaps investigate more of the parameter combinations for each model which yield feasible simulations of the system. An alternative fuzzy calibration technique is introduced which avoids the optimisation process and takes account of uncertainties in the model structure, parameter sets and observed data in prediction.

Item Type: Journal Article
Journal or Publication Title: Stochastic Hydrology and Hydraulics
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/ge
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 21823
Deposited By: ep_ss_importer
Deposited On: 09 Feb 2009 10:52
Refereed?: Yes
Published?: Published
Last Modified: 11 Feb 2020 07:39
URI: https://eprints.lancs.ac.uk/id/eprint/21823

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