Application of hot-film sensors in analysis of wake induced boundary layer

• Autorzy: Elsner W. , Wysocki M. , Sobczyk A.
• Języki publikacji: EN

Abstrakty

EN

The paper presents an experimental analysis of the development of the unsteady boundary layer on a stator turbine blade. Upstream rotor wakes were generated by the rotating wheel of cylindrical rods. During the experiment three different cases with various wake-passing frequencies were tested and the boundary layer has been investigated with the use of surface mounted hot-films gauges. Analysis of the wall shear stresses presented in the paper reveals the high receptivity of boundary layer to periodical disturbances, which was documented among the others by the shift of laminar--turbulent transition zone from the region close to trailing edge upstream the flow.

Słowa kluczowe

EN

boundary layer; wake; hot-film sensor

PL

warstwa przyścienna; strumień nadążający

• Wydawca: Wydawnictwo Politechniki Częstochowskiej
• Czasopismo: Turbulence : international journal
• Rocznik: 2000
• Tom: Vol. 6-7
• Strony: 175--186
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Elsner W.

• Institute of Thermal Machinery, Technical University of Częstochowa, al. Armii Krajowej 21, 42-200 Częstochowa

autor

Wysocki M.

• Institute of Thermal Machinery, Technical University of Częstochowa, al. Armii Krajowej 21, 42-200 Częstochowa

autor

Sobczyk A.

• Institute of Thermal Machinery, Technical University of Częstochowa, al. Armii Krajowej 21, 42-200 Częstochowa

Bibliografia

• 1. Elsner W., Drobniak S., Behaviour of boundary layer on a blade under the condition of periodic disturbances, Cieplne Maszyny Przepływowe, Turbomachinery 20 vol. 117, pp. 161-166 (in polish).
• 2. Hodson H.P., Addison J.S., Wake-boundary layer interactions in an axial flow turbine rotor at off-design conditions, Trans. ASME J. of Turbomachinery 1989, vol. 1 pp. 181-192.
• 3. Hodson H.P., et al., Models for unsteady wake-induced transition in axial turbomachines, J. Phys III France 2 1992, vol. 2, pp. 545-574.
• 4. Hodson H.P., Huntsman I., Steele A.B., An investigation of boundary layer development in a multistage LP turbine, Trans. ASME J. of Turbomachinery 1994, vol. 1 pp. 375-383.
• 5. Mayle R.E., Schulz A., The patch to predicting bypass transition, Trans. ASMI of Turbomachinery 1997, vol. 119, pp. 405-411.
• 6. Schobeiri M.T., Pappu K., Experimental study on the effect of unsteadiness in bound layer development on a linear turbine cascade, Experiment in Fluids 1997, vol. pp. 306-3 16.
• 7. Haueisen V., Schroder T., Hennecke D., Measurements with surface mounted hot-films sensors on boundary layer transition in wake disturbed flow, AGARD PEP Symposium on Advanced Non-intrusive Instrumentation for Propulsion Engines, Brussels 1999.
• 8. Zenebe G. Evans R.L., Measurement of unsteady wake-boundary layer interactio using hot films, AGARD PEP Symposium on Advanced Non-intrusive Instrumentation Propulsion Engines, Brussels 1999.