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Publications in Scientific Journals:

M. Tautz, M. Kaltenbacher, S. Becker:
"Numerical Aeroacoustic Noise Prediction for Complex HVAC Systems";
SAE International, 1 (2018).



English abstract:
Reliable tools for the prediction of aeroacoustic noise are
of major interest for the car industry and also for the
vendors of heating, ventilation and air conditioning
(HVAC) systems whose aim is to reduce the negative impact of
HVAC noise onto passengers. In this work a hybrid approach
based on the acoustic perturbation equations is tested for this
purpose. In a first step, the incompressible flow field is computed
by means of a commercial finite volume solver. A large eddy
simulation turbulence model is used to obtain time resolved
flow data, which is required to accurately predict acoustic
phenomena. Subsequently, the aeroacoustic sources are
computed and conservatively interpolated to a finite element
grid, which is used to calculate the sound radiation. This procedure
is tested for an HVAC unit, a radial blower and finally for
a complete system, which combines these two components.
Measurements of the aeroacoustic noise excited by these
components are performed in a semi-anechoic chamber. The
comparison of spectra obtained from the simulations and the
experiments reveals a good agreement up to a specific frequency.


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.4271/2018-01-1515

Electronic version of the publication:
https://publik.tuwien.ac.at/files/publik_272540.pdf


Created from the Publication Database of the Vienna University of Technology.