Kettle, Helen and Hankin, Barry G. and Beven, Keith J. (2002) Fuzzy rule-based model for contaminant transport in a natural river channel. Journal of Hydroinformatics, 4 (1). pp. 53-62. ISSN 1464-7141Full text not available from this repository.
Fuzzy rules are used to model solute dispersion in a river dead zone, such that the turbulent diffusion is determined by a fuzzy inference system which relates the local mean velocity shear to the longitudinal velocity fluctuations. A finite-volume hybrid scheme is applied to a non-orthogonal grid for which a mean velocity field is produced using the computational fluid dynamics (CFD) package Telemac 2D. At each cell face fuzzy rules predict a fuzzy number, and these numbers reflect the possible magnitudes of turbulent velocity fluctuations. These are input to the finite-volume model using a single-value simulation method. Multiple model runs produce a fuzzy number for the solute concentration in each cell. The results of the fuzzy model are then compared with data collected in a field experiment with rhodamine dye in the River Severn.
|Journal or Publication Title:||Journal of Hydroinformatics|
|Subjects:||G Geography. Anthropology. Recreation > GE Environmental Sciences|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
|Deposited On:||15 Jan 2009 09:32|
|Last Modified:||18 Jun 2016 00:14|
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