Acoustic calculation for noise reductors of compressors
by D. Leray, Tecumseh Europe and Y. Goth, Cetim Senlis
Tecumseh Europe produces hermetic compressors and condensing units for thermodynamic applications (coolers, heat pumps …). Acoustics is one of the key selection criteria for our customers.
En 2006 le CETIM has recommended the use of Code_Aster for calculations of vibrational and acoustic response in parallel with commercial codes. Since then, Tecumseh adopted Code_Aster for all acoustic calculations. Our main use is for the calculation of noise reductors.
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Gradually, with the help of CETIM, we begin to integrate also the calculations of radiation. The approach uses the features of fluid-structure provided by the code. A complementary approach developed by Cetim allows the chaining of vibration and acoustic calculations, based on a python script.
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Working in collaboration with the CETIM was synthesized in a paper presented at the conference : International Compressor Engineering Conference à Purdue en juillet 2012.