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You are here : eLibrary : IAHR World Congress Proceedings : 32nd Congress - Venice (2007) : THEME C: Fluid Mechanics and Hydraulics : Three-dimensional numerical investigation of flow regimes in step -pools
Three-dimensional numerical investigation of flow regimes in step -pools
Author : Georg Premstaller, Peter Rutschmann
Stepped channels, spillways and step-pool systems are common means in hydraulic design. In mountainous regions stepped channels have established themselves in bederosion control. These structures are known to be susceptible to unsteady wave development. In this work, the hydraulic components of the problem are analysed. The differences between free and submerged structures in terms of wave development are pointed out. A three-dimensional numerical simulation tool is employed to analyse wave development. Numerical accuracy and diffusion are assessed for different meshes and simulations are carried out in step-pool systems with varying discharges using a suitable mesh. Mass-, momentum- and energy- balance are analysed in order to distinguish between three different flow regimes. Wave development is finally analysed using a representative configuration.
File Size : 582,365 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 32nd Congress - Venice (2007)
Article : THEME C: Fluid Mechanics and Hydraulics
Date Published : 01/07/2007
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