Blar i NTNU Open på forfatter "Billdal, Jan Tore"
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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 ... -
Fluid structure interaction of Francis-99 turbine and experimental validation
Østby, Petter Thorvald Krogh; Agnalt, Einar; Haugen, Bjørn; Billdal, Jan Tore; Dahlhaug, Ole Gunnar (Journal article; Peer reviewed, 2019)The ability to predict a francis runners dynamic response to the exciting forces is paramount to avoid unwanted disintegration of the turbines components. In this article, each of the principal factors contributing to the ... -
Simulation of pre-rotation in the flow at the inlet of a Reversible Pump Turbine
Torød, Kristin Morvik (Master thesis, 2018)In this master thesis, CFD simulations of an imposed pre-rotation in the flow at the inlet of a reversible pump turbine (RPT) were carried out in ANSYS CFX. The simulations were conducted on the RPT model designed by ...