Publication

Modellversuche zum Einfluss von Pumpspeichersequenzen auf Stromungsverhaltnisse in einem quaderformigen Becken

Anton Schleiss
2010
Conference Papers

Abstract

In systematic tests on a physical model, the influence of fast and repeated change of operations between generating and pumping modes on turbulence and sedimentation process by fine sediments in a rectangular cuboid is examined. It is studied how turbulence and settling down of fine sediments is affected by discharge, duration of pumped storage sequences and the intake/outlet location.-Prior to laboratory tests, several scenarios with and without sediments were simulated in a numerical model. A comparison between the results and observations on the physical model allows optimizing both numerical and experimental setup. The present paper describes the physical modeling concept, the test rig and presents results of the preliminary numerical and hydraulic tests.

Official source

https://infoscience.epfl.ch/entities/publication/f5d3df6f-ba61-4d0a-8669-96d401d1e341

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Anton Schleiss
2010
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f5d3df6f-ba61-4d0a-8669-96d401d1e341

About this result

Related concepts (32)

Sediment

Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sand and silt can be carried in suspension in river water and on reaching the sea bed deposited by sedimentation; if buried, they may eventually become sandstone and siltstone (sedimentary rocks) through lithification.

Sediment transport

Sediment transport is the movement of solid particles (sediment), typically due to a combination of gravity acting on the sediment, and the movement of the fluid in which the sediment is entrained. Sediment transport occurs in natural systems where the particles are clastic rocks (sand, gravel, boulders, etc.), mud, or clay; the fluid is air, water, or ice; and the force of gravity acts to move the particles along the sloping surface on which they are resting.

Fluvial processes

In geography and geology, fluvial processes are associated with rivers and streams and the deposits and landforms created by them. When the stream or rivers are associated with glaciers, ice sheets, or ice caps, the term glaciofluvial or fluvioglacial is used. Fluvial processes include the motion of sediment and erosion or deposition on the river bed. The movement of water across the stream bed exerts a shear stress directly onto the bed.

Related publications (32)

Modellversuche zum Einfluss von Pumpspeichersequenzen auf Stromungsverhaltnisse in einem quaderformigen Becken

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