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EN
This paper analyzed the water flow parameters in the local scour created after building stones sills No 3 km 480 + 902 and 4 km 479 + 225 below the Jeziorsko reservoir on the river Warta. The analysis was carried out using the result of field measurements (velocity distributions) and SSIIM (freeware) software. The study of the geometry of the local scour, were used to create a numerical model and implementing it to the SSIIM software. In the research, the impact of grid density on the obtained results was estimated. The results included the qualitative and quantitative assessment. The conducted analysis can be used to determine the movement of sediment in local scour, and can predict the development in time, and also specify the sill stability under different conditions of the water flow.
2
Content available remote The analysis of turbulent flow structure in a free jet
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tom Vol. 14, no 4
917-928
EN
The paper presents the results of numerical calculations and experimental investigations of free jets under variable turbulence in the jet outlet. The research concerns two cases: the issue of an unstimulated axisymmetric jet to stationary surroundings and the impinge of an unstimulated jet on a flat fixed surface. The results of the numerical calculations have been presented in graphs showing the impact of the changes in the initial turbulence on the structure of the turbulence in the jet. A comparison of the numerical calculations with own results of the experimental investigations has been made for selected cases.
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