Abstr:UFR 3-35: Difference between revisions
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We applied a Large Eddy Simulation as well as Particle Image Velocity experiments at the flow around a vertical cylinder on a flat rigid bed. The occurring flow structure (horseshoe vortex) reveals a high dynamic pattern with horzintal oscillations generating turbulent kinetic energy. The vortex is linked to the dynamic of a wall-parallel jet, which exters highly amplified shear stress to the bottom plate. Due to this shear stress erosoin can take place in case of sand-embedded bridge piers leading to scour. | We applied a Large Eddy Simulation as well as Particle Image Velocity experiments at the flow around a vertical cylinder on a flat rigid bed. The occurring flow structure (horseshoe vortex) reveals a high dynamic pattern with horzintal oscillations generating turbulent kinetic energy. The vortex is linked to the dynamic of a wall-parallel jet, which exters highly amplified shear stress to the bottom plate. Due to this shear stress erosoin can take place in case of sand-embedded bridge piers leading to scour. | ||
This study followed a bilateral apporach by studying this flow configuration numerically as well as experimentally. Both data sets refer to the same flow configuration, but were acquired independently and are made accessible at the end of the section [[/Evaluation/]]. | This study followed a bilateral apporach by studying this flow configuration numerically as well as experimentally. Both data sets refer to the same flow configuration, but were acquired independently and are made accessible at the end of the section [[Lib:UFR3-35/Evaluation/]]. | ||
Revision as of 10:07, 2 September 2019
Cylinder-wall junction flow
Semi-confined Flows
Underlying Flow Regime 3-35
Abstract
We applied a Large Eddy Simulation as well as Particle Image Velocity experiments at the flow around a vertical cylinder on a flat rigid bed. The occurring flow structure (horseshoe vortex) reveals a high dynamic pattern with horzintal oscillations generating turbulent kinetic energy. The vortex is linked to the dynamic of a wall-parallel jet, which exters highly amplified shear stress to the bottom plate. Due to this shear stress erosoin can take place in case of sand-embedded bridge piers leading to scour. This study followed a bilateral apporach by studying this flow configuration numerically as well as experimentally. Both data sets refer to the same flow configuration, but were acquired independently and are made accessible at the end of the section Lib:UFR3-35/Evaluation/.
Contributed by: Ulrich Jenssen, Wolfgang Schanderl, Michael Manhart — Technical University Munich
© copyright ERCOFTAC 2019