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Modeling a Plunging Underflow |
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| Authors: | Chris J Dallimore J?rg Imberger Ben R Hodges |
| Affiliation: | 1Research Associate, Centre for Water Research, Univ. of Western Australia, Perth 6009, Western Australia. E-mail: dallimor@cwr.uwa.edu.au 2Professor and Chair, Centre for Water Research, Univ. of Western Australia, Perth 6009, Western Australia. 3Associate Professor, Environmental and Water Resources Engineering, Dept. of Civil Engineering, Univ. of Texas at Austin, Austin, TX 78712. |
| Abstract: | A coupled three-dimensional hydrodynamics and two-dimensional underflow model is adapted to provide simulation of plunging inflows in reservoirs. The new approach accounts for the effect of the barotropic term prior to the plunge point of the inflow. Simulations of plunging flows in constant width and constant slope channels are conducted and the resulting plunge depths are in agreement with prior empirical models. Simulation of a previously measured underflow in Wellington Reservoir (Australia) demonstrates the model application to a plunging inflow in a natural water body and good agreement between field and model results. |
| Keywords: | Hydrodynamic models Currents Lakes Reservoirs Australia Inflow Plunging flow |