الفهرس 
CHAPTER I INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Pipe flow and open channel flow have been thoroughly studied in decades of development of hydraulics. In this thesis, an important type of flow called “Flow in Channels with Extended Boundaries” is introduced, defined, and experimentally investigated. In this flow, the channel sides are extended to cover part of the free surface. The extensions just touch the water surface, so the pressure on the top surface is still approximately atmospheric. The existence of fixed extended boundaries affects the distributions of both velocity and discharge. Acoustic Doppler Velocimeters were used to sample the so-called ADV data through a preset complete mesh to create iso-lines of the velocity distribution. In the light of the previous studies and the theoretical considerations, the effects of four parameters were examined. They are the flow aspect ratio, the boundary extension ratio, the bed and extension roughness, and the extension symmetricity. Sixteen experiments were conducted to collect the experimental data. Figures for the iso flow velocity lines and tables for the flow discharge distributions were introduced. Results were checked against equations available in the literature and the hydraulic principles were used to analyze the collected data.