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      • KCI등재

        Assessment of Roughness Coefficient for Meandering Compound Channels

        Arpan Pradhan,Kishanjit Kumar Khatua 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.5

        Factors affecting roughness coefficient in a meandering compound channel are investigated and used to predict Manning’sroughness by dimensional analysis. Factors affecting Manning’s roughness, are considered to be geometric as well as hydraulic,namely relative depth of flow, width ratio, bed slope and sinuosity for a meandering compound channel. An experimentalinvestigation was carried out for the highly meandering channel of sinuosity 4.11. Observations of various researchers, on thelaboratory study of meandering channels have also been used in the investigation. The proposed equation for predicting compositeManning’s roughness is used to estimate the conveyance of a channel with floodplain flow. The proposed dimensional analysismodel is observed to predict the conveyance capacity better than other existing methods of Manning’s n prediction.

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