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Bladeshape of the runner in turbomachines

Explore blade shapes, inlet/outlet parameters & velocity calculations in radial and axial turbomachines. Draw radial view for analysis.

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Bladeshape of the runner in turbomachines

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  1. Bladeshape of the runner in turbomachines

  2. Traditional runner X blade runner

  3. Bladeshape of radial machines • Input parameters • Head H [m] • Flow rate Q [m3/s] • Speed n [rpm] • Choose • Inlet diameter D1 [m] • Outlet diameter D2 [m]

  4. Axial view

  5. u1 b1 w1 c1 Calculate all velocities in the inlet velocity triangle

  6. Svartisen P = 350 MW H = 543 m Q* = 71,5 m3/S D0 = 4,86 m D1 = 4,31m D2 = 2,35 m B0 = 0,28 m n = 333 rpm

  7. Calculate all velocities in the outlet velocity triangle u2 b2 c2 w2

  8. u1 c1 w1 u2 w2 c2 Draw the radial view

  9. Bladeshape of axial machines • Input parameters • Head H [m] • Flow rate Q [m3/s] • Speed n [rpm] • Choose • Inlet diameter D1 [m] • Outlet diameter D2 [m]

  10. Axial view

  11. Jebba, Nigeria *Q = 376 m3/s *H = 27,6 m *P = 96 MW D0 = 8,5 m De = 7,1 m Di = 3,1 m B0 = 2,8 m

  12. Calculate all velocities in the inlet velocity triangles u1 b1 c1 w1

  13. u1 u1 b1 b1 c1 c1 w1 w1

  14. Calculate all velocities in the outlet velocity triangles u2 b2 c2 w2 u2 b2 c2 w2

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