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Sem 7 - OPEN CHANNEL AND COASTAL HYDRAULICS (SELECTIVE – 1)


Module 1
Parameters of open channel flow – uniform and non uniform flow normal depth – conveyance – friction formula – specific energy – specific force – diagram – critical depth – application to problems. Critical flow computation – section factor – hydraulic exponent for critical flow computation and its use for trapezoidal channel.
Module 2
Hydraulic jump – sequent depths – dimensionless equation of the jump – loss of head – the jump at the feet of a spillway – criteria for the formation of a jump – use of jump as an energy disspiator. Control of jump by sills – stilling basins.
Module 3
Non-uniform flow – friction slope – differential equation of non-uniform flow – the 12 type of surface profiles – the point of control – computation by Bresse’s method and the simplified step method.
Module 4
Water waves – classification into periodic progressive, periodic oscillatory, oscillatory and stationary waves – ocean waves – wave period – wave length and celerity. General expression for the celerity of deep Water – gravity wave and shallow water gravity wave – determination of the wave length and celerity for any water depth given the deep water wave amount as wave energy (no proof). Wave deformation – transformation of waves on a slope (description only) reflection of waves at a vertical sea wall. Clapotis – wave refraction – breaking of waves (description only).
Module 5
Wind generated waves – wave forecasting – significant wave height – breakwaters – different types. Coastal erosion with special reference to the Kerala Coast – shore protection measures – sea walls – tetrapods. groynes and’beach nourishment.
References
1. 1.S.M.Woodword, C.J.Posey, Hydraulic of Steady Flow in Open Channels
2. F. N. Henderson, Open Channel Flow
3. A. I. Ippen, Estuary and Coast line Hydrodynamics
4. K. E. R. I. Peechi, Coastal Engineering Publications
5. V. T. Chow, Open Channel hydraulics, Mc Graw Hill
6. Robert .M. Sorensen, Basic coastal engineering, John Willy & Sons
mg university b.tech s7 civil syllabus