Studies of acoustic field and fan housing interaction and transformations
Vitalijus Volkovas1 , Robertas Mikalauskas2 , Evaldas Černiauskas3
1, 2Kaunas University of Technology, Kaunas, Lithuania
3Salda Ltd, Šiauliai, Lithuania
Vibroengineering PROCEDIA, Vol. 3, 2014, p. 300-305.
Accepted 22 September 2014; published 10 October 2014
In order to reduce acoustic noise in residential, industrial as well as other premises, this research examined the interaction between the acoustic field of fixed sources (fans) and the insulating housing used for acoustic noise transformation. For this purpose, a model of acoustic field and heterogeneous mechanical system interaction was designed and tested to adequately reflect the actual processes. The results showed that the designed theoretical model allows to predict changes of the acoustic field in the installation environment. The absolute error of the values calculated by the model by using experimentally determined sound pressure level loss values did not exceed 2.5 dB when compared to the experimental values.
Keywords: modeling, acoustic field, FEM, heterogeneous mechanical system.
This research was funded by the European Social Fund under the project “Microsensors, Microactuators and Controllers for Mechatronic Systems (Go-Smart)” (Agreement No. VP1-3.1-ŠMM-08-K-01-015).
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