Sound localization and quantification analysis of an automotive engine cooling module
Sound emissions of an automotive engine cooling system are studied using both single-
microphone directivity measurements and a rotating beamforming technique. These …
microphone directivity measurements and a rotating beamforming technique. These …
[HTML][HTML] Combined acoustic and aerodynamic investigation of the effect of inlet geometry on tip leakage flow noise of free-inlet free-exhaust low-speed axial flow fans
The performance and the emitted noise of a free inlet–free exhaust axial flow fan are
influenced by the inlet geometry. In the present paper, the effect of bellmouth entries with …
influenced by the inlet geometry. In the present paper, the effect of bellmouth entries with …
Beamforming method for extracting the broadband noise sources of counter-rotating open rotors
Counter-rotating open rotors (CRORs) are known to have advantageous propulsive
efficiency properties but, at the same time, many noise emission issues related to this …
efficiency properties but, at the same time, many noise emission issues related to this …
Phased array microphone measurement of a ducted low-speed axial flow fan at various operating points with the involvement of the acoustically transparent duct …
The aeroacoustic investigation of ducted turbomachines is not evident. Wall-mounted and
strut-mounted microphones placed in the flow field are both sensitive to installation …
strut-mounted microphones placed in the flow field are both sensitive to installation …
[HTML][HTML] Beamforming based extension of semi-empirical noise modelling for low-speed axial flow fans
The application of the turbulent boundary layer trailing edge (TBL-TE) noise component of
the semi-empirical Brooks-Pope-Marcolini (BPM) model in an axial flow fan case study is …
the semi-empirical Brooks-Pope-Marcolini (BPM) model in an axial flow fan case study is …
Algorithmic localisation of noise sources in the tip region of a low-speed axial flow fan
An objective and algorithmised methodology is proposed to analyse beamform data
obtained for axial fans. Its application is demonstrated in a case study regarding the tip …
obtained for axial fans. Its application is demonstrated in a case study regarding the tip …
Comparison of the rotating source identifier and the virtual rotating array method
B Tóth, J Vad, G Kotán - Periodica Polytechnica Mechanical …, 2018 - pp.bme.hu
The aim of this paper is to present two acoustic beamforming methods developed for rotating
sources, namely the Rotating Source Identifier (ROSI) and the Virtual Rotating Array method …
sources, namely the Rotating Source Identifier (ROSI) and the Virtual Rotating Array method …
Effect of a pylon on the broadband noise sources of counter-rotating turbomachinery
Pylons are commonly used for the mounting of engines in the aircraft industry. On the other
hand, the installation of a pylon influences the noise generation mechanisms and therefore …
hand, the installation of a pylon influences the noise generation mechanisms and therefore …
Experiment-based preliminary design guidelines for consideration of profile vortex shedding from low-speed axial fan blades
This paper presents hot-wire measurements in a wind tunnel, close downstream of basic
models of blade sections being representative for low-speed, low-Reynolds number axial …
models of blade sections being representative for low-speed, low-Reynolds number axial …
A fuzzy clustering method for periodic data, applied for processing turbomachinery beamforming maps
In the present paper, the fuzzy c-means method is extended, and an algorithm is proposed
for fuzzy clustering of data lying in a feature space of arbitrary dimensions, with one of them …
for fuzzy clustering of data lying in a feature space of arbitrary dimensions, with one of them …