Wyniki wyszukiwania - BazTech

Ograniczanie wyników

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

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: instantaneous flow patterns

Sortuj według:

Ogranicz wyniki do:

The development of measurement methods in application to unsteady work parameters of a turbocharger

Olczyk A.

Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

1999

nr 115

311--318

The article describes the methods of measurements of instantaneous flow parameters (pressure, temperature, mass flow rate, velocity) in the compressor and turbine circuits of a turbocharger. Two test rigs are described: Garrett T3 test in St Cyr l'Ecole (France) with a disctype pulse generator and Garrett T2 test rig in Łódź , with a rotating valve type generator and a heater placed upstream of the turbine tested. The results of measurements obtained in these two arrangements are compared and possibilities of further development of applied methods are discussed.

Numerical study of the parallel vortex airfoil interaction

Piechna J., Szumowsk i A.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

1998

Vol. 2, No 2

357-372

The effect of a strong vortex interacting with an airfoil flow is investigated numerically. The finite volume method for Euler equations is applied. Instantaneous flow patterns, including pressure distributions along the airfoil and lift coefficients, were calculated for various miss distances of the vortex passing parallely to the airfoil plane. It has been found that the effects of interaction are much stronger when the vortex approaching the airfoil accelerates the flow at the pressure surface than in the case when the vortex decelerates the flow at the suction surface. The lift coefficient only slightly depends on the vortex core radius if the velocity induced at the airfoil surface by vortices of various cores is constant. In contrast to this the intensity of the acoustic disturbance produced during the interaction strongly depends on the core radius even for a constant induced flow velocity.