Numerical analysis of high-speed impulsive (HSI) noise of PZL W3-A "Sokół" (Falcon) helicopter main rotor in forward flight

• Autorzy: Szulc O. , Doerffer P. , Tejero F. , Żółtak J. , Małecki J.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of a numerical simulation of the flow and acoustic field generated by the PZL W3-A “Sokół” (Falcon) helicopter main roto in high-speed forward flight conditions based on the URANS approach and the chimera overlapping grids technique. A refined CFD model (40+ million of control volumes, 600+ blocks chimera mesh) was designed to resolve the flow-field together with the low-frequency content of the acoustic pressure spectrum in the near-field of the rotor blades to allow high-speed impulsive (HSI) noise prediction. Detailed 3D data was recorded for one rotor revolution (approx. 3 TB) allowing exceptional insight into the physical mechanisms initiating the occurrence and development of the HSI noise phenomenon.

Słowa kluczowe

EN

aerodynamics; CFD; forward flight; helicopter rotor; HSI noise; shock wave

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2015
• Tom: Vol. 19, No 2
• Strony: 181--196
• Opis fizyczny: Bibliogr. 17 poz., rys.

Twórcy

autor

Szulc O.

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

autor

Doerffer P.

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

autor

Tejero F.

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

autor

Żółtak J.

• Institute of Aviation, Al. Krakowska 110/114, 02-256 Warszawa, Poland

autor

Małecki J.

• PZL-Świdnik S. A., AugustaWestland, Al. Lotników Polskich 1, 21-045 Świdnik, Poland

Bibliografia

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