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Influence of dead-water zones on the dispersive mass-transport in rivers

Weitbrecht, Volker


The dispersive mass transport in rivers has been investigated to improve the predictability of transport scenarios in case of accidental pollutant spills. In particular, the influence of dead-water zones, as they are given by groin fields, on the transport characteristics in the main stream has been analyzed. A literature review of detailed map material from the rivers Rhine, Waal and Elbe has been performed, in order to plan representative laboratory experiments. Typical aspect ratios of the groin fields as well as typical inclination angles have been summarized. Based on these results, experiments have been performed in a laboratory flume equipped with schematized groins. Within theses experiments the aspect ratio, the inclination angles as well as the groin field volume has been varied. Due to the fact that the flow is very shallow and, therefore, quasi two-dimensional, the flow velocities have been determined at the water surface, using a Surface Particle-Image-Velocimetry-System that has been developed for that purpose. Additional measurements, using a two-dimensional Laser-Doppler-Velocimeter, have been performed for resolving the velocity distribution over the water depth. ... mehr

Volltext §
DOI: 10.5445/KSP/1242004
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Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Hydromechanik (IFH)
Publikationstyp Hochschulschrift
Publikationsjahr 2004
Sprache Deutsch
Identifikator ISBN: 3-937300-07-4
ISSN: 1439-4111
KITopen-ID: 1242004
Verlag Universitätsverlag Karlsruhe
Umfang VII, 130 S.
Serie Dissertationsreihe am Institut für Hydromechanik der Universität Karlsruhe (TH) ; 2004,1
Art der Arbeit Dissertation
Institut Institut für Hydromechanik (IFH)
Prüfungsdaten 06.02.2004
Schlagwörter Groin fields, dispersion, pollutant transport, Lagrangian particle tracking
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