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- W3025621242 abstract "Reservoir sedimentation results in ongoing loss of storage capacity all around the world. Thus, effective sediment management in reservoirs is becoming an increasingly important task requiring detailed process understanding. Computational fluid dynamics modelling can provide an efficient means to study relevant processes. An existing in-house hydrodynamic code has been extended to model particle-driven gravity currents. This has been realised through a buoyancy term which was added as a source term to the momentum equation. The model was successfully verified and validated using literature data of lock exchange experiments. In addition, the capability of the model to optimize venting of turbidity currents as an efficient sediment management strategy for reservoirs was tested. The results show that the concentration field during venting agrees well with observations from laboratory experiments documented in literature. The relevance of particle-driven gravity currents for the flow field in reservoirs is shown by comparing results of simulations with and without buoyant forces included into the model. The accuracy of the model in the area of the bottom outlet can possibly be improved through the implementation of a non-upwind scheme for the advection of velocity." @default.
- W3025621242 created "2020-05-21" @default.
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- W3025621242 date "2020-05-15" @default.
- W3025621242 modified "2023-09-23" @default.
- W3025621242 title "CFD Modelling of Particle-Driven Gravity Currents in Reservoirs" @default.
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- W3025621242 doi "https://doi.org/10.3390/w12051403" @default.
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