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International Journal of Civil, Mechanical and Energy Science

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Analysis of Flow Resistance in Open Channel for Proper Flow Prediction( Vol-2,Issue-1,January 2016 )


Lakshmi Mitra, Prof. (Dr.) Mimi Das Saikia


Channel bed, Manning’s “n”, Open channel flow, Rectangular flume, Roughness coefficient.


In an open channel flow, the Manning’s n depends on the bed material of the channel, the slope of the channel and the rate of discharge in the channel. Experiments are done with two bed materials, the original bed surface of the channel and with grass carper. The roughness coefficient is determined in various cases. The variations in roughness coefficient is tested with respect to flow parameters such as discharge, depth and bed slope. The effect of variations the flow parameters on different bed roughness is also analyzed by taking into account the original flume surface and grass carpet surface.

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