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Hydraulic jump is a phenomenon caused by change in stream regime from super critical flow to sub critical flow with considerable energy dissipation and rise in depth of flow. At the place where hydraulic jump occur rollers of turbulent water form which causes dissipation of energy. Hydraulic jump primarily serve as energy dissipater to dissipate ex...
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... empirical models are developed using Buckingham's π-theorem and regression analysis of experimental data. On the basis of linear fitting between hydraulic jump characteristics and dimensionless group developed, the following empirical models were developed The present model equation for dissipation index E L /Y 1 is validated using Bhutto (1987) data and the plot of predicted value of E L /Y 1 with experimental value of E L /Y 1 is shown in figure (4). All the data points are lying within ± 10% of the best fit curve and R 2 = 0.9921 for linear fit between experimental and predicted value of E L /Y 1, clearly indicates the excellent fitting of present model equation (1). ...
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Hydraulic jump is a phenomenon caused by change in stream regime from supercritical to sub – critical flow with considerable energy dissipation and rise in depth of flow. Hydraulic jump primarily serves as an energy dissipater to dissipate excess energy of flowing water downstream of hydraulic structures, such as spillway, sluice gates etc. This excess energy, if left unchecked, will have adverse effect on the banks and the bed. A review of literature has shown that earlier researcher have studied the hydraulic jump characteristics in terms of approach Froude number (Fr 1) only. In the present paper hydraulic jump in horizontal prismatic channel has been studied and analyzed considering the effect of both approach Froude number and incoming Reynolds number (Re 1). Empirical models for relative length and relative energy loss of free hydraulic jump based on experimental data using Buckingham – theorem and regression analysis have been developed considering the effect of approach Froude number and incoming Reynolds number. The developed empirical computational model is validated using Bhutto (1987) data.
Hydraulic jump is a phenomenon caused by change in stream regime from supercritical to sub – critical flow with considerable energy dissipation and rise in depth of flow. Hydraulic jump primarily serves as an energy dissipater to dissipate excess energy of flowing water downstream of hydraulic structures, such as spillway, sluice gates etc. This excess energy, if left unchecked, will have adverse effect on the banks and the bed. A review of literature has shown that earlier researcher have studied the hydraulic jump characteristics in terms of approach Froude number (Fr 1) only. In the present paper hydraulic jump in horizontal prismatic channel has been studied and analyzed considering the effect of both approach Froude number and incoming Reynolds number (Re 1). Empirical models for relative specific energy before and after the hydraulic jump based on experimental data using Buckingham π – theorem and regression analysis have been developed considering the effect of approach Froude number and incoming Reynolds number. The developed empirical computational model is validated using Bhutto (1987) data.
