STUDY OF RESISTANCE IN STEADY GRADUALLY VARIED FLOW PROFILES
Lakshmi rani Konwar,
Assistant Professor, Civil Engineering, Girijananda Institute of Management and Technology Guwahati, India
Bibhash Sarma
Associated Professor, Civil Engineering Assam Engineering College Guwahati, India
Receiving Date:
2016-03-20
Acceptance Date:
2016-04-15
Publication Date:
2016-05-17
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Abstract
The paper describes the numerical solution of gradually varied flow with the logarithmic resistance explicit
formula of Colebrook–White equation of pipe flow in the open channel replacing pipe diameter by the
equivalent diameter of open channel in order to study the effect of transition turbulent effect on the flow
profiles. The model solution obtained taking Manning’s equation as resistance equation is compared
graphically with the available experimental data. The plot in four different profiles has shown a close
agreement between experimental data and model solution. This has justified the use of channel resistance
equation which takes care of flow in different state of flow.
Keywords:
Manning’s n, Chezy’s C, Friction factor f, Equivalent diameter De , Reynold’s no. Re , Friction slope Sf ,
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