Experimental Investigations of Acoustic Characteristics of Two Counter-Rotating Rotors

• Autorzy: Rydlewicz W. , Błaszczak J. R.
• Języki publikacji: EN

Abstrakty

EN

The presented investigations are continuation of earlier researches performed in the Institute of Turbomachinery (Lodz University of Technology, Poland). The main aim of this paper is to investigate the acoustics properties of the chosen configuration of a flow set–up consisting of two coaxial counter–rotating rotors. Description and analysis of measurements are presented. As a consequence, conclusions about possibility of noise reduction of such a system are presented. According to the EU Directives, the main areas of application are multi–purpose helicopters with two coaxial counter–rotating rotors, drones and future passenger–aircrafts with next–generation aeroengines.

Słowa kluczowe

EN

aeroengine; counter–rotating rotors; fan; acoustics; noise reduction

PL

wentylator; akustyka; redukcja szumów

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2016
• Tom: Vol. 20, nr 4
• Strony: 489--497
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Rydlewicz W.

• Lodz University of Technology Institute of Turbomachinery

autor

Błaszczak J. R.

• Lodz University of Technology Institute of Turbomachinery

Bibliografia

• [1] Rydlewicz, J.: Wentylatory i pompy przep lywowe, Lodz University of Technology, 1989.
• [2] Wojciechowski, K., B laszczak, J. R.: Experimental Investigation of an Interaction between Two Rotating Rotors, CMP-Turbomachinery, 140, 225–234, 2011.
• [3] B laszczak, J. R.: Flow Noise Correlation with Efficiency and Vibration Level, J. of Systems Science, 11, 1, pp. 8–15, 2006.
• [4] B laszczak, J. R.: Noise Reduction and Efficiency Improvement through Vane Indexing of a Two-Stage Turbine, AIAA, 2006–2578, 2006.
• [5] B laszczak, J. R.: Noise Reduction through Vane and Blade Clocking of a Two–Stage Turbine, Advances in Vibration Engineering, 11, 2, 121–129, 2012.
• [6] B laszczak, J. R., Comte-Bellot, G. and Smolny, A.: New Aeroacoustic Facility at the Institute of Turbomachinery, CMP-Turbomachinery, 128, 79–86, 2005.
• [7] B laszczak, J. R.: Experimental Investigations of a Turbine Stage Load on Boundary Layers and Noise Generation, (in Polish), Scientific Project # 4 T10 B 04323, Polish Committee of Science, 2005.
• [8] Heidmann, J. D., Lucci, B. L. and Reshotko, E.: An Experimental Study of the Effect of Wake Passing on Turbine Blade Film Cooling, NASA Technical Memorandum, 107425, 1997.
• [9] Womack, K. M., Volino, R. J. and Schultz, M. P.: Measurements in Film Cooling Flows With Periodic Wakes, J. of Turbomachinery, ASME, 130, 041008, 2008.
• [10] Koch, D. L.: Predicting the Inflow Distortion Tone Noise of the NASA Glenn Advanced Noise Control Fan With a Combined Quadrupole-Dipole Model, NASA/TM—2012-217673, AIAA, 2012–2196, 2012.
• [11] Sobczak, K., Smolny, A., B laszczak, J.R.: Quasi-Unsteady Simulations of the Clocking Phenomena in the Two-Stage Turbine, Mechanics and Mechanical Engineering, 12, 2, 111–124, 2008.
• [12] B laszczak, J. R.: Vane-to-Vane and Blade-to-Blade Indexing of a Highly-Loaded Two-Stage Turbine, ASME, GT2007-27639, 2007.
• [13] B laszczak, J. R.: Performance Improvement and Noise Reduction through Vane and Blade Indexing of a Two–Stage Turbine, AIAA, 2008-2941, 2008.
• [14] Crocker, M. J., ed.: Handbook of Acoustics. Wiley–Interscience, John Wiley & Sons, New York, 1997.
• [15] Smolny, A., B laszczak, J. R.: Boundary Layer and Loss Studies on Highly Loaded Turbine Cascade, AGARD/NATO, CP-571/4, 1–13, 1996.
• [16] Jorgensen, F.E.: How to Measure Turbulence with Hot–Wire Anemometers, Dantec Dynamics, Tonsbakken, 2002.
• [17] B laszczak, J. R. and Borzecki, T.: Badania warstw przy´sciennych na profilach kierownic wysokoobci¸a˙zonej turbin, J. of Systems Science, 11, 1, 136–144, 2006.
• [18] Smolny, A., B laszczak, J. R. and Sobczak, K.: Performance Improvement through the Vane Clocking Effect in a Two–Stage Impulse Turbine, Mechanics and Mechanical Engineering, 15, 3, 343–354, 2011.