Prediction of diesel engine cooling fan noise

Geon Seok Kim, Gerald C. Lauchle, Timothy A. Brungart

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This effort focuses on measuring and predicting the discrete-frequency and broadband noise radiated by a diesel engine cooling fan. In such engine cooling systems, where space is very limited, it would be very difficult if not impossible to measure the fan inflow velocity field using the conventional, stationary hot-wire method. Instead, the fan inflow was measured with a twocomponent x-type hot-film probe attached very close to the leading edge of a rotating blade. The fan's radiated noise was measured without contamination from the engine noise by driving the fan with an electric motor. The spatially non-uniform mean velocity field was used in axial-flow fan noise theory to predict the discrete-frequency noise at the blade-pass frequency and harmonics. The influences due to an upstream finger guard were also investigated. The spacetime correlations of the inflow velocity fluctuations were utilized in stochastic lifting surface theory to calculate the unsteady blade lift and resulting broadband fan noise. The radiated sound power spectra that were measured for the fan are shown to be in excellent agreement with those predicted.

Original languageEnglish (US)
Title of host publicationInstitute of Noise Control Engineering of the USA - 22nd National Conference on Noise Control Engineering, NOISE-CON 2007
Pages56-63
Number of pages8
Publication statusPublished - Dec 1 2007
Event22nd National Conference on Noise Control Engineering, NOISE-CON 2007 - Reno, NV, United States
Duration: Oct 22 2007Oct 24 2007

Publication series

NameInstitute of Noise Control Engineering of the USA - 22nd National Conference on Noise Control Engineering, NOISE-CON 2007
Volume1

Other

Other22nd National Conference on Noise Control Engineering, NOISE-CON 2007
CountryUnited States
CityReno, NV
Period10/22/0710/24/07

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All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

Kim, G. S., Lauchle, G. C., & Brungart, T. A. (2007). Prediction of diesel engine cooling fan noise. In Institute of Noise Control Engineering of the USA - 22nd National Conference on Noise Control Engineering, NOISE-CON 2007 (pp. 56-63). (Institute of Noise Control Engineering of the USA - 22nd National Conference on Noise Control Engineering, NOISE-CON 2007; Vol. 1).