I.O.Brovchenko, V.S.Maderich Three-dimensional Lagrangian model of multifractional sediments transport and its application to the simulation of gravitational currents |
Applied hydromechanics, Vol. 10 (82) ¹ 2, (2008) |
| A new three-dimensional Lagrangian sediment transport model for cohesive and non-cohesive sediment for the case when bottom material type and it's grain-size composition are variable in the modeling area is proposed. The model is coupled with three-dimensional hydrodynamic models which use sigma-coordinate system that allow to describe naturally transport in boundary layer and bottom morphology. Calculation results were validated on the numerical and analytical solutions of Euler problems and laboratory experiment. Model was applied for the case study of winter convection on the Arctic shelf which causes triggering of sediment down slope movement and enhancement of the gravity current at the cost of sediment. |
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| TEXT LANGUAGE: Russian |