Blar i Institutt for energi og prosessteknikk på tidsskrift "Journal of Fluids Engineering - Trancactions of The ASME"

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    • Flow Around Curved Tandem Cylinders 

      Aasland, Tale Egeberg; Pettersen, Bjørnar; Andersson, Helge Ingolf; Jiang, Fengjian (Peer reviewed; Journal article, 2022)
      The flow around curved tandem cylinders of equal diameter has been investigated for the first time, by means of direct numerical simulations. A convex configuration was used. The nominal gap ratio was L/D = 3.0 and a ...

    • Investigations of Compressible Turbulent Flow in a High-Head Francis Turbine 

      Trivedi, Chirag (Journal article; Peer reviewed, 2017)
      Dynamic stability of the high-head Francis turbines is one of the challenging problems. Unsteady rotor–stator interaction (RSI) develops dynamic stresses and leads to crack in the blades. In a high-head turbine, vaneless ...

    • Optimization of Francis Turbines for Variable Speed Operation Using Surrogate Modeling Approach 

      Iliev, Igor; Tengs, Erik Os; Trivedi, Chirag; Dahlhaug, Ole Gunnar (Peer reviewed; Journal article, 2020)
      Previous studies suggested variable speed operation (VSO) of Francis turbines as a measure to improve the efficiency at off-design operating conditions. This is, however, strongly dependent on the hydraulic design and, for ...