Determinig of the sound power of the fan in in situ conditions using the virtual reference source method

• Autorzy: Suder-Dębska Katarzyna , Czajka Ireneusz , Łojek Paweł

Identyfikatory

DOI

10.21008/j.0860-6897.2021.2.06

• Języki publikacji: EN

Abstrakty

EN

Sound power is one of the basic parameters characterizing the sound source and has a direct impact on the acoustic climate in its surroundings. Therefore, the determining of the sound power of machines is a practical problem. While there are many methods of determining the sound power, each of them has its own limitations. The authors presented the implementation of a comparative method of determining the sound power with the use of a virtual reference source. The method was used to test a high-efficiency flue gas exhaust fan installed on a laboratory stand. The sound source was placed in the geometric centre of the fan and the acoustic field distribution in the room was determined using geometrical methods. After determining the influence factors, the value of the source sound power of the source was calculated by means of the Moore-Penrose pseudo-inverse. Since the problem under study belongs to the inverse problems, the Tikhonov regularization was used, where the value of the parameter α was determined by the L-curve method.

Słowa kluczowe

EN

fan as a sound source; sound power; noise; reference source; regularization

PL

wentylator jako źródło dźwięku; moc akustyczna; hałas; źródło odniesienia; regularyzacja

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2021
• Tom: Vol. 32, nr 2
• Strony: art. no. 2021206
• Opis fizyczny: Bibliogr. 13 poz., 1 il., 1 rys. kolor., wykr.

Twórcy

autor

Suder-Dębska Katarzyna

• AGH University of Science and Technology, Department of Power Systems and Environmental Protection Facilities, 30 Mickiewicza Av., 30-059 Kraków, Poland

autor

Czajka Ireneusz

• AGH University of Science and Technology, Department of Power Systems and Environmental Protection Facilities, 30 Mickiewicza Av., 30-059 Kraków, Poland

autor

Łojek Paweł

• AGH University of Science and Technology, Department of Power Systems and Environmental Protection Facilities, 30 Mickiewicza Av., 30-059 Kraków, Poland

Bibliografia

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• 2. J. Picaut, N. Fortin. I-Simpa, a graphical user interface devoted to host 3D sound propagation numerical codes. Société Française d’Acoustique, Acoustics 2012, Nantes, France, April 2012.
• 3. J. Picaut, N. Fortin. SPPS, a particle-tracing numerical code for indoor and outdoor sound propagation prediction. Société Française d’Acoustique, Acoustics 2012, Nantes, France, April 2012.
• 4. M. R. Schroeder. The “Schroeder frequency” revisited. The Journal of the Acoustical Society of America, 99(5):3240-3241, 1996.
• 5. E. H. Moore. On the reciprocal of the general algebraic matrix. Bulletin of the American Mathematical Society, 26(9):394-95, 1920. DOI: 10.1090/S0002-9904-1920-03322-7
• 6. R. Penrose. A generalized inverse for matrices. Proceedings of the Cambridge Philosophical Society, 51(3):406-413, 1955. DOI: 10.1017/S0305004100030401
• 7. H. W. Engl, M. Hanke, A. Neubauer. Regularization of inverse problems. Kluwer Academic Publishers, Dordrecht, 1996.
• 8. B. Hofmann. Regularization for applied inverse and ill-posed problems. BSB Teubner, Leipzig, 1986.
• 9. M. Kern. Numerical methods for inverse problems. Wiley, London, 2016.
• 10. M. Hanke. Limitations of the L-curve method in ill-posed problems. BIT Numerical Mathematics. 36:287-301, 1996.
• 11. P. Ch. Hansen, D. P. O’Leary. The use of the L-curve in the regularization of discrete ill-posed problems. SIAM Journal on Scientific Computing. 14(6):1487-1503, 1993. DOI:10.1137/0914086
• 12. D. P. O’Leary. Near-optimal parameters for Tikhonov and other regularization methods. SIAM Journal on Scientific Computing. 23(4):1161-1171, 2001.
• 13. H. Seddik, R. Greve, T. Zwinger, S. Sugiyama. Regional modeling of the Shirase drainage basin, East Antarctica: full Stokes vs. shallow ice dynamics. The Cryosphere, 11:2213-2229, 2017. DOI: 0.5194/tc-11-2213-2017

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).