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As improved data collection and hydrologic information becomes available, flood flows are often updated. This may require that a spillway be re-evaluated to determine if it can pass the updated flood flow. Advances in computing power and Computational Fluid Dynamics (CFD) algorithms, have created a tool for the evaluation of discharge over spillway...
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Ice jam formation is a sudden phenomenon that causes a rapid rise in water levels upstream of ice jams resulting in severe flooding (Lagadec et al. 2015, Lindenschmidt et al. 2018, Pawłowski 2016). Thus, it is necessary to develop ice jam forecasting tools to increase response time and minimize the damage caused by these floods.
The DAVE project is...
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Extensive physical modelling of labyrinth spillways, primarily flume studies, has been performed, resulting in the development of several design methods. Two of the more common methods used in the U.S.A., referred to herein as the Lux and Tullis methods, are compared for a given labyrinth geometry. Results of a RANS Computational Fluid Dynamics (CFD) model, using commercially available software (Flow-3D), for the same configuration is shown to give results comparable to those obtained using these design methods. Non-standard approach conditions and geometries are modelled using physical and numerical methods and the applicability of the Lux and Tullis methods for these conditions is evaluated. In particular, this paper considers the effects of aspect ratios (W/P) less than the minimum values recommended for the Lux and Tullis design methods. The results indicate that while the design methods are not appropriate for aspect ratios less than 2; hydraulic performance does increase for lower W/P values. Further testing to define labyrinth hydraulic behaviour for these lower W/P values is recommended.
