Correlating sediment erosion in rotary–stationary gaps of francis turbines with complex flow patterns

HIGHLIGHTS

  • What: This work examines the secondary flows developing at these locations in a and the consequent sediment erosion effects. In the upper labyrinth field can be predicted as the flow enclosed between the stationary and rotating dis is one ofinthe models for predicting the flow inside labyrinth increases the simplified contraction, and its kinetic energy dissipates to heat in thethe expansion area,and can be applied upper labyrinth. thus lowering to the the pressure in each region.
  • Who: Nirmal Acharya et al. from the Waterpower Laboratory, Department of Energy and Process Engineering, Norwegian University of . . .

     

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