National Institute of Technology Rourkela

राष्ट्रीय प्रौद्योगिकी संस्थान राउरकेला

ଜାତୀୟ ପ୍ରଯୁକ୍ତି ପ୍ରତିଷ୍ଠାନ ରାଉରକେଲା

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Syllabus

Course Details

Subject {L-T-P / C} : CE6400 : Open Channel Flow { 3-0-0 / 3}

Subject Nature : Theory

Coordinator : Kishanjit Kumar Khatua

Syllabus

Module 1 :

Module1: Introduction to free surface flow: Open- channel flow and its classifications, measurement of velocity, velocity distribution, pressure distribution, specific energy, Specific force and critical state of flow, section factor for critical flow, The most efficient section of channels.
[7 hours]

Module2: Uniform flow: Determination of roughness coefficients and the factors affecting the roughness, composite roughness of a channel with different rough surfaces.
Computation of uniform flow, flood discharge, determination of normal depth and velocity, flow in composite roughness Design of channels for uniform flow in non-erodable and erodable with grassed channels.
Flow computations for Compound channels, Meandering channels and braided channels. Stage-discharge curves for compound, meandering channels and braided channels. [8 hours]

Module3: Gradualy varied flow: Dynamics of Gradually varied flow and classification of flow profile, methods of computation, Dynamics of spatially varied flow - analysis of flow profile and computation by different methods with both analytical and numerical methods [8 hours]


Module4: Rapidly varied flow: classification, flow over spillway, Hydraulic Jump, types with characteristics of jump, the surface profile and location of the jump, jumps as energy decapitator, Channel transitions , Control sections.. [ 7 hours]

Module5: Unsteady flow: Flow dynamics of gradually varied unsteady flow, solution of unsteady flow equations, rapidly varied unsteady flow, positive and negative surges, flood routing, principle and methods of flood routing. [6 hours]

Course Objective

1 .

Provide an introduction to the field of river flow mechanics which is the basic of flow mechanism in a river. This is the most important part of the Water Resources engineering.

2 .

Help students to develop an understanding of solution of free surface of flow which is an important part of fluid mechanics.

3 .

Illustrate the design methods of cross section of channels for different flow and geometry conditions.

4 .

Provide idea on flow computation, velocity distribution in a river or artificial channel with complex geometry, plan form and flow conditions ( steady and unsteady).

Course Outcome

1 .

CO1: Understand the fundamental of free surface flow, types of flow and compare with other types of flow in Hydraulics.
CO2: Understand the basic governing equations and applications in open channel flow
CO3: Compute the flow velocity, roughness, discharge, specific energy and other variables in a channel for given geometry, plan form and flow conditions
CO4: Analyze and solve the characteristic of non-uniform flow that occurs in a Channel
CO5: Analyze and solve the flow variables and different conditions of occurrence in the unsteady open channel flow.

Essential Reading

1 .

V. T. Chow, Open Channel Hydraulics, McGraw-Hill Publishing Company, , New Delhi, 1993 , Most of the syllabus is covering

2 .

M. Hanif Chaudhry, Open-Channel Flow, Springer,USA, 2nd edition, 2008 , Most of the syllabus is covering

Supplementary Reading

1 .

H. Chanson, The Hydraulics of Open Channel Flow, Elsevier , Numerical application on open channel flow

2 .

K. Subramanya, Flow in Open Channel, Tata McGraw Hill , Good examples on problems in open channel flow