Browsing NTNU Open by Author "Sivertsen, Kjell"
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Experimental investigation on the effect off near walls on the eigen frequency of a low specific speed francis runner
Østby, Petter Thorvald Krogh; Sivertsen, Kjell; Billdal, Jan Tore; Haugen, Bjørn (Journal article; Peer reviewed, 2019)The importance to correctly predict the natural frequency of a turbine runner have been demonstrated several times. It is now common practice to include the added mass effect of the surrounding water when calculating the ...