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1 TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
1 Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

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Numerical Simulation of Model Helicopter Rotor in Hover

Doerffer P., Szulc O.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2008

Vol. 12, No 3-4

227-236

The article presents details of a URANS simulation of the flow field near a hovering model of the Caradonna and Tung (1981) helicopter rotor [1]. The CFD code SPARC [2] proves to be capable of capturing the aerodynamics of a two-bladed rotor in high-speed transonic hover conditions. A comparison of the simulation results with the experimental data is acceptable, hence the described methodology might be used with confidence in future numerical studies of application of noise-reducing devices on helicopter blades.

Shock-induced dynamics of an elastically turbine cascade at transonic flow

Urban B., Stetter H., Vortmeyer N.

Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

1999

nr 115

387--396

This paper presents experimental investigations on shock-induced flutter in a linear transonic turbine cascade. To examine these phenomena, an elastic suspension system has been developed so that only aerodynamic coupling occurs. The profiles are typical for the tip section of a transonic low pressure steam turbine last stage. The examination at the two-dimensional test rig with superheated steam as working fluid mainly deals with the oscillatory behaviour of the blades with respect to a variation of the isentropic outlet Mach number. In addition, the complex shockboundary layer interactions on the blades' suction sides are described.