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Experimental study of the velocity of density currents in convergent and divergent channels

International Journal of Sediment Research 2014年第4期29卷 518-523页

作者： Hasan Torabi POUDEH Samad EMAMGHOLIZADEH Manoocher Fathi-MOGHADAM Department of Water Engineering Lorestan of University Department of Water and Soil Engineering University of Shahrood Department of Hydraulic Structures Shahid Chamran University

The head velocity of the density current in the convergent and divergent channel is a key parameter for evaluating the extent to which suspended material travels,and for determining the type and distribution of sediment in the water *** study experimentally evaluated the effects of the reach degree of convergence and divergence on the head velocity of the density *** were conducted in the flume with 6.0 m long,0.72 m width and 0.6 m *** head velocity was measured at three convergent degrees(-8°;-12°;-26°),at three divergent degrees(8°;12°;26°) and two slopes(0.009,0.016) for various *** measured head velocity of the density current is compared with the head velocity of the density current in the constant cross section *** on non-dimensional and statistical analysis,relations as linear multiple regression are offered for predicting head velocity of the density current in the convergent,divergent and constant cross section *** the results of this research show that for the same slope and discharge,the head velocity of the density current in the convergent and divergent channel are greater and less than the head velocity of the constant cross section,respectively.

关键词： Density current divergent and convergent channel Reservoir Sediment

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Experimental study of the velocity of density currents in convergent and divergent channels

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International Journal of Sediment Research 2013年第2期28卷 254-259页

作者： Hasan Torabi POUDEH Samad EMAMGHOLIZADEH Manoocher Fathi-MOGHADAM Department of Water Engineering Lorestan of University Department of Water and Soil Engineering Shahrood University of Technology Department of Hydraulic Structures Shahid Chamran University

The head velocity of the density current in the convergent and divergent channel is a key parameter for evaluating the extent to which suspended material travels,and for determining the type and distribution of sediment in the water *** study experimentally evaluated the effects of the reach degree of convergence and divergence on the head velocity of the density *** were conducted in the flume with 6.0 m long,0.72 m width and 0.6 m *** head velocity was measured at three convergent degrees(-8°;-12°;-26°),at three divergent degrees(8°;12°;26°) and two slopes(0.009,0.016) for various *** measured head velocity of the density current is compared with the head velocity of the density current in the constant cross section channel. Based on non-dimensional and statistical analysis,relations as linear multiple regression offered for prediction head velocity of the density current in the convergent,divergent and constant cross section *** the results of this research show that for the same slope and discharge,the head velocity of the density current in the convergent and divergent channel are greater and less than the head velocity of the constant cross section, respectively.

关键词： Density current divergent and convergent channel Reservoir Sediment

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