Abstract
The paper provides methods of axial fan noise reduction and considers the results of calculation studies of the fan tonal noise. The tonal noise related to the rotational and interaction noise has 15–20 dB higher levels than the broadband turbulent and vortex noises, and therefore, it has the most annoying impact. A finite element model of the cooling system fan has been developed. The noise was calculated with the microphone located in the near field and the speed of the cooling fan being 2142 rpm. Goldstein analogy was used for modeling and further optimization in terms of tonal noise. Parametric optimization for tonal noise reduction was performed. The number of blades and the angles between blades were chosen as variables. More than 20 options of the cooling system fans were considered. The best design in terms of the tonal noise of the blade among the ones included in this article is the seven-blade fan.
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Rakhmatov, R.I., Krutolapov, V.E., Kurmaev, R.H. (2022). Cooling System Axial Fan Design Calculation and Optimization in Terms of Tonal Noise. In: Radionov, A.A., Gasiyarov, V.R. (eds) Proceedings of the 7th International Conference on Industrial Engineering (ICIE 2021). ICIE 2021. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-85233-7_65
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DOI: https://doi.org/10.1007/978-3-030-85233-7_65
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