Performance improvement through the vane clocking effect in a two-stage impulse turbine

• Autorzy: Smolny A. , Błaszczak J. , Sobczak K.
• Konferencja: International Symposium on Compressor and Turbine Flow Systems - Theory and Application Areas "SYMKOM" (10 ; 26-28.10.2011 ; Łódź, Polska)
• Języki publikacji: EN

Abstrakty

EN

The paper describes the experimental and numerical investigations of stator clocking effects on performance of a two-stage impulse turbine with low-aspect ratio airfoils. The data present the clocking effect that can be observed both for local flow patterns and external characteristics for the entire turbine in terms of efficiency. Finding an optimal relative circumferential position of stators in a multistage axial turbine has been the subject of extensive investigations in the last decade.

Słowa kluczowe

EN

impulse turbine; efficiency; clocking; unsteady flow; calculation

PL

turbina impulsowa; wydajność; przepływ niestabilny; obliczenie

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2011
• Tom: Vol. 15, nr 3
• Strony: 343--354
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Smolny A.

autor

Błaszczak J.

autor

Sobczak K.

• Institute of Turbomachinery Technical University of Łódź

Bibliografia

• [1] Howell, R.J., Ramesh, O.N., Hodson, H.P., Harvey, N.W. and Schulte, V.: High Lift and Aft-Loaded Profiles for Low-Pressure Turbines, ASME, J. Turbomachinery, 123, pp. 181-188, 2001.
• [2] Arnone, A., Bonaiuti, D, Focacci, A., Pacciani. R., Del Greco, A. S. and Spano, E.: Parametric Optimization of a High-Lift Turbine Vane, GT2004-54308, 2004.
• [3] Barankiewicz, W.S. and Hathaway, M.D.: Effects of stator indexing on performance In low Speer multistage Arial compressor, NASA TM 113113, 1997.
• [4] Behr T., Porreca L., Mokulys T., Kalfas A.I. and Abhari R.S.: Multistage Aspects and Unsteady Effects of Stator and Rotor Clocking In an Axial Turbine with Low Aspect Ratio Blading, ASME, GT2004-53612, 2004.
• [5] Błaszczak J.: Efficiency improvement and noise reduction through statot-stator clocking effect of two-stage turbine, ASME, GT2005-68833, 2005.
• [6] Chodkiewicz R., Sobczak K., Papierski A. and Borzęcki T.: CFD Code - A useful tool for the turbomachinery designer, Task Quarterly 6, no 4, pp. 553-575, 2002.
• [7] Huber, F.W., Johnson, P.D., Sharma, O.P., Staubach, J.B. and Gaddis, S.W.: Performance Improvement Through Indexing of Turbine Airfoils: Part 1 Experimental Investigation, ASME, J. of Turbomachinery, 118, pp. 630-635, 1996.
• [8] Jouini, D.B.M., Little, D., Bancalari, E., Dunn, M., Haldeman, C. and Johnson, P.D.: Experimental Investigation of Airfoil Clocking Impacts on Aerodynamic Performance in a Two Stage Turbine Test Rig, ASME, GT2003-38872, 2003.
• [9] Gadea, J., Denos, R., Paniagua G., Billiard N. and Sieverding C.H.: Effect of Clocking on the Second Stator Pressure Field of a One and a Half Stage Transonic Turbine, ASME, GT2004-53463, 2004.
• [10] Haldeman, C.W., Dunn M.G., Barter, J.W., Green, B., R. and Bergholz, R.F.: Experimental Investigation of a Vane Clocking in a One and Stage High Pressure Turbine, ASME, GT2004-53477, 2004.
• [11] Smolny, A. and Błaszczak, J.R.: Experimental Investigations Of Unsteady Flow Fields In A Two-Stage Turbine, 2nd EuroConf. on Turbomachinery, Antwerp, Belgium,1997.
• [12] Sobczak K., Smolny A. and Błaszczak J.: Quasi-unsteady simulations of clocking phenomena In the two-stage turbine, Mechanics and Mechanical Eng., Vol. 12, No. 2, pp. 111-124, 2008.
• [13] Krysiński, J., Smolny, A., Błaszczak, J. and Gallus, H.E.: 3D Unsteady Flow Experimental Investigations in a Two-Stage LP Turbine, ISUAAAT'2000, Lyon, France, pp. 515-523, 2000.
• [14] Krysiński, J., Błaszczak, J.R. and Smolny, A.: Stator Clocking Effect on Efficiency of a Two-Stage Low-Pressure Model Turbine, 4th EuroConference on Turbomachinery, ATI-CST090/01, pp. 1045-1051, Florence, Italy, 2001.
• [15] Krysiński, J.E., Błaszczak, J. and Smolny, A.: Two-stage turbine experimental investigations of unsteady stator-stator interaction, ISUAAAT'2003, Durham, NC, 2003.
• [16] Krysiński J. Smolny, A., Błaszczak, J. and Sobczak K.: Badania akcyjnych wieńców łopatek przy wysokich obciążeniach na powietrznej dwustopniowej turbinie modelowej, Sprawozdanie z projektu NN 513427733 KBN, 2011.