Model-based assessment of sediment sources in sewers.

Autor:	Tränckner, J., Bönisch, G., Gebhard, V.R., Dirckx, G., Krebs, P.
Předmět:	SEWERAGE DRAINAGE SEDIMENTS SEDIMENT transport SEDIMENTATION & deposition
Zdroj:	Urban Water Journal; Oct2008, Vol. 5 Issue 4, p277-286, 10p, 1 Diagram, 9 Charts, 4 Graphs
Abstrakt:	Transport behaviour of a particle under certain flow conditions is mainly defined by its geometric and physical properties. Besides, the pollution potential of sewer sediments depends strongly on size and origin. This paper presents an approach for keeping track of freely defined particle classes. A total load transport model was modified to facilitate fraction wise transport and distinguish between sedimentation and erosion as two different processes. Compared to approaches using only one characteristic diameter modelled transport rates are in the same order of magnitude but with additional information of size distribution and origin. A virtual case study shows the general applicability. Main constraint is the increase of model parameters and data needs. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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