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Title: Energy and momentum correction coefficients in compound open channel flow
Authors: Sahoo, Sarjati
Khuntia, Jnana Ranjan
Devi, Kamalini
Khatua, Kishanjit Kumar
Keywords: Open channel flow
Compound channel
Energy and momentum correction
Multiple regression analysis
Error analysis
Issue Date: Dec-2018
Citation: 23rd International Conference on Hydraulics, Water Resources and Coastal Engineering (HYDRO 2018), Patna,India, 19-21 December 2018.
Abstract: This paper concerned with a new concept of modelling for kinetic energy and momentum coefficients for rough asymmetric channels. Kinetic energy coefficient (α) and momentum coefficient (β) were determined by taking a series of laboratory experiment datasets. Presently experiments were carried out in a rough (plastic mat and gravel bed on flood plain) asymmetric compound channel. In this present study, improved models have been developed to predict the accurate values of kinetic energy and momentum correction coefficients by using multiple regression analysis. Multiple regression analysis is used to predict dependent variables from a number of independent variables. Energy correction factor ( ) and momentum correction factor () are taken as dependent variable and aspect ratio ( = /h), roughness ratio (γ = / ), Reynolds number (Re) and Froude’s number (Fr), width ratio ( 1= / ), relative depth ( = ( −h)/ ) are taken as independent variable. Error analysis is performed to determine the accuracy of the present models in terms of Mean Percentage Error (MPE), Mean Absolute Percentage Error (MAPE) and Root Mean Square Error (RMSE).
Description: Copyright of this document belongs to proceedings publisher.
Appears in Collections:Conference Papers

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