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List of products by author: J. Aberle
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Linking physical wall roughness of unlined tunnels to hydraulic resistance – The Tunnel Roughness project
Abstract: Hydropower tunnels are a vital component in Norwegian hydropower systems, both for transporting water and controlling releases of flood flows. How much water can be conveyed depends on a number of factors such as the cross sectional area and the friction from the tunnel walls. Norwegian hydropower tunnels are generally unlined and energy losses have mostly been quantified before commissioning...
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