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This book covers the basics of fluid mechanics besides flow of fluids both in pipes and channels including the alluvial ones in sufficient detail. It will be useful to the undergraduate students of fluid mechanics (in disciplines such as civil engineering mechanical engineering chemical engineering agricultural engineering paper and pulp technology etc.) and hydraulic engineering. Practicing engineers including river engineers dealing with flow of fluids in pipes rigid boundary channels and alluvial channels will also find it a useful and handy guide. The book has 17 chapters that cover details of fluid properties fluid statics fluid kinematics fluid dynamics fluid flow equations and their applications physical modeling and flow measurement viscous flows boundary layer and external flows incompressible viscous flow in pipes pipe flow systems basic concepts of open channel flow uniform flow critical flow steady nonuniform flow unsteady nonuniform flow controls and flow measurement in channels and hydraulics of alluvial channels. The fundamentals as well as design methods dealt with in the text have been illustrated adequately through a number of solved examples including some real design problems given at the end of each chapter. Over 100 solved examples and 150 unsolved problems have been included which the students could attempt to understand the application of the basic principles and design methods. About the Author G. L. Asawa is Professor Department of Civil Engineering Indian Institute of Technology Roorkee (formerly University of Roorkee). He joined the department in 1971 and has travelled on foreign assignment in Nigeria and to European and Asian countries for presenting research papers in conferences delivering invited lectures or under exchange programme. He has been teaching hydraulic engineering at both undergraduate and postgraduate levels and also associated with research and consultancy activities in different aspects of water resources engineering (design of hydraulic structures and river training works physical modelling of rivers and hydraulic structures) and wind engineering. He has published about 60 research papers and written as many reports on consultancy projects. Dr. Asawa is a member of the Monitoring Committee for Isorrc 113 Works and also other committees at the national level. He led the Indian delegation for Isorrc 113 committee meetings in October 1994. He is life fellow of the Institution of Engineers (India) Indian Society for Hydraulics Indian Water Resources Society and Indian Association of Hydrologists and is a life member of the Indian Society for Wind Engineering.