Modeling of flow with periodic wakes

• Autorzy: Wierciński Z. , Epik Ya. T. E. , Suprun T. T.
• Języki publikacji: EN

Abstrakty

EN

The flow through blade channels in turbomachinery is unsteady due to wakes from the blade rings placed upstream. The squirrel cage is one of the most spread generators for modeling the unsteady flow with wakes. By means of this kind of wake generator it is possible to investigate the influence of wakes on the development of boundary layer in the presence of transition under conditions typical for turbomachines. The aim of this paper is to compare the features of the external flow behind the squirrel cage generators and structure of boundary layers on the flat plates in installations used at IFFM, Gdańsk, and IET, kiev.

Słowa kluczowe

EN

laminar-turbulent transition; wakes influence

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN
• Czasopismo: Transactions of the Institute of Fluid-Flow Machinery
• Rocznik: 2003
• Tom: nr 114
• Strony: 267--276
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Wierciński Z.

• Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland

autor

Epik Ya. T. E.

• Institute of Engineering Thermophysics, NASU, Zhelyabova 2a, 03057, Kiev, Ukraine

autor

Suprun T. T.

• Institute of Engineering Thermophysics, NASU, Zhelyabova 2a, 03057, Kiev, Ukraine

Bibliografia

• [1] Dyban E. P., Epik E. Ya.: Heat and Mass Transfer and Fluid Dynamics of Turbulized Flows, Naukova Dumka Publ. House, Kiev, 1985 (in Russian).
• [2] Epik E. Ya., Suprun T. T.: Heat transfer and diagnostics of bypass laminar-turbulent transition, Proc. of 3rd Int. Symp. on Turbulence, Heat and Mass Transfer, Nagoya, Japan, 2000. 1-8.
• [3] Dyban E. P., Epik E. Ya.: The structure of boundary layers in a bypass laminar-turbulent transition, Ind. Heat Eng., Vol. 1, No. 1, 1999, 22-31.
• [4] Wierciński Z., Suprun T. T., Epik E. Ya.: Characteristics of the laminar-turbulent transition induced by the wake of a single mouing cylinder, Ind. Heat Eng., Vol. 3, No. 3-4, 2001, 16-23.
• [5] Epik E. Ya., Suprun T. T., Melnik V. D.: Heat transfer in the rear ofmoving wakes in the presence of the laminar-turbulent transition, Ind. Heat Eng., Vol. 4, No. 1, 2002, 24-29.
• [6] Wang T., Simon, T. W., Buddhavarapu: Heat transfer and fluid mechanics measurements in transitional boundary layer flows, J. Eng. for Gas Turbines and Power, Vol. 107, 1985, 1007-1015.
• [7] Kuan C.L., Wang T.: Inuestigation of the intermittent behauior of transitional boundary layer using a conditional aueraging techniąue, Experimental Thermal and Fluid Science, Vol. 3, 1990, 157-172.
• [8] Solin K. H., O'Brien J. E., Reshotko E.: Some characteristics of bypass transition in a heated boundary layer, 7th Symp. on Turbulent Shear Flows, 1989, 2.4.1-2.4.6.