Restricted accessReview articleFirst published online 1990-11
Influence of the Blade Stacking on the Flow Through an Axial Flow Runner and Predictions of Three-Dimensional and Quasi Three-Dimensional Numerical Codes
The influence of the stacking of the blade sections on the flow through an axial flow runner is investigated by means of quasi and three-dimensional finite element programs.
The results show up higher pressure gradients close to the leading edges, in the sections near the hub, when the stacking point is displaced towards the trailing edge. These gradients become noticeable near the trailing edge when the stacking point moves towards the inlet, even if in an attenuated way these trends reverse in sections close to the shroud.
The above-mentioned effects are highlighted only if three-dimensional codes or quasi three-dimensional codes with more than one hub-to-shroud surface are employed.
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References
1.
WislicenusG. F.Fluid mechanics of turbomachinery, 2nd edition, 1965 (Dover Publications, New York).
2.
VentroneG.Sul dimensionamento delle pale raddrizzatrici nelle turbo-pompe assiali. Apparecchiature Idrauliche e Pneumatiche, December 1966.
3.
NavarroG.ArdizzonG.Influenza della geometria palare sull'assetto del fluido nelle giranti delle macchine assiali. Proceedings of the 40th Congress of ATI (Italian Thermotechnical Society), Trieste, September 1985, Vol. 4, pp. 23–33.
4.
DaigujiH.A finite element method for analysing the 3-D flow in turbomachines. Fourth International Symposium on Finite element methods in flow problem, Tokyo, July 1982, pp. 751–758.
5.
ArdizzonG.Analisi tridimensionale agit elementi finiti del moto in una girante centrifuga. La Termotecnica, October 1989, pp. 59–67.
6.
BosmanC.El-ShaarawiM. A. I.Quasi three-dimensional numerical solution of flow in turbomachines. J. Fluids Engng, March 1977, 132–140.
7.
NavarroG.PavesiG.Scorrimento della corrente relativa nelle giranti operatrici. Proceedings of the 39th Congress of ATI (Italian Thermotechnical Society), L'Aquila, September 1984, pp. 301–212.
8.
PavesiG.Turbine a gas di piccola potenza per impianti di cogenerazione. PhD thesis, University of Padua, 1988.
9.
KrimermanY.AdlerD.The complete three-dimensional calculation of the compressible flow field in turbo impellers. J. Mech. Engng Sci., 1978, 20(3), 149–158.
