Improved design of Hydroelectric projects - Filipek, Katarzyna;Kasprzyk, Anna
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The purpose of this book is to link head loss coefficients in rough pipes to the physical roughness of the surface to through measurements of head loss in fully turbulent flow. It is generally regarded that hydraulic roughness is some function of the height, spacing, density and nature of the physical roughness under consideration. Attempts have been made to link hydraulic roughness to physical roughness of an irregular surface. Those have, however, been incomplete and conducted at flow states which do not allow concrete conclusions to be drawn. Further research on the topic is therefore…mehr

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Produktbeschreibung
The purpose of this book is to link head loss coefficients in rough pipes to the physical roughness of the surface to through measurements of head loss in fully turbulent flow. It is generally regarded that hydraulic roughness is some function of the height, spacing, density and nature of the physical roughness under consideration. Attempts have been made to link hydraulic roughness to physical roughness of an irregular surface. Those have, however, been incomplete and conducted at flow states which do not allow concrete conclusions to be drawn. Further research on the topic is therefore needed to define a fully mature assessment methodology. The interior of the pipe were scanned and different methods to convert physical roughness to hydraulic roughness were tested. Two different types of profiles were identified and different methods suggested for each type. The book shows connection between the experimental results with measured head loss in hydroelectric projects in operation and deduces hydraulic friction values for different rock types in tunnels excavated with tunnel boring machines.
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Autorenporträt
Katarzyna Filipek has received the Master of Science degree in Hydropower in affiliation with the University of Iceland and the University of Akureyri. It has been carried out in cooperation with Verkis Company between November 2010 and February 2011.