A new kind of C-type grid is proposed for turbomachinery flow calculations. This grid is nonperiodic on the wake and results in minimum skewness for cascades with high turning and large camber. Euler and Reynolds averaged Navier-Stokes equations are discretized on this type of grid using a finite volume approach. The Baldwin-Lomax eddy-viscosity model is used for turbulence closure. Jameson's explicit Runge-Kutta scheme is adopted for the integration in time, and computational efficiency is achieved through accelerating strategies such as multigriding and residual smoothing. A detailed numerical study was performed for a turbine rotor and for a vane. A grid dependence analysis is presented and the effect of artificial dissipation is also investigated. Comparison of calculations with experiments clearly demonstrates the advantage of the proposed grid.

Transonic Cascade Flow Calculations Using Non–Periodic C–Type Grids / Arnone A.; Liou M. S.; Povinelli L. A.. - STAMPA. - (1990), pp. 143-162. (Intervento presentato al convegno Computational Fluid Dynamics Symposium on Aeropropulsion tenutosi a Cleveland, OH, USA nel April, 1990).

Transonic Cascade Flow Calculations Using Non–Periodic C–Type Grids

ARNONE, ANDREA
Investigation
;
1990

Abstract

A new kind of C-type grid is proposed for turbomachinery flow calculations. This grid is nonperiodic on the wake and results in minimum skewness for cascades with high turning and large camber. Euler and Reynolds averaged Navier-Stokes equations are discretized on this type of grid using a finite volume approach. The Baldwin-Lomax eddy-viscosity model is used for turbulence closure. Jameson's explicit Runge-Kutta scheme is adopted for the integration in time, and computational efficiency is achieved through accelerating strategies such as multigriding and residual smoothing. A detailed numerical study was performed for a turbine rotor and for a vane. A grid dependence analysis is presented and the effect of artificial dissipation is also investigated. Comparison of calculations with experiments clearly demonstrates the advantage of the proposed grid.
1990
Conference Proceedings
Computational Fluid Dynamics Symposium on Aeropropulsion
Cleveland, OH, USA
April, 1990
Arnone A.; Liou M. S.; Povinelli L. A.
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/649055
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