Title: Numerical modelling of multiphase flow-induced noise and vibration in a poppet valve

Authors: Chenguang Li; Fue-Sang Lien; Eugene Yee; Mike Dong

Addresses: Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Ave. W., Waterloo, ON, N2L 3G1, Canada ' Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Ave. W., Waterloo, ON, N2L 3G1, Canada ' Defence Research and Development Canada, Suffield Research Centre, P.O. Box 4000 Stn Main, Medicine Hat, AB T1A 8K6, Canada ' Ford Motor Company, 20000 Rotunda Dr., Dearborn, MI, 48124, USA

Abstract: A deeper understanding of the multiphase flow-induced noise and vibration in a dynamic valve is of critical importance to the automotive industry. A two-dimensional axis-symmetric Eulerian multiphase flow model that incorporates a fluid-structure interaction capability was used to facilitate the modelling of the complicated two-phase flow through the poppet valve. The validation results provide confirmation that the model developed in this study should provide credible predictions. A spectral analysis of the transient pressure force on the poppet revealed the presence of a strong cyclical behaviour consisting of two major components: a low-frequency peak located at about 87 Hz associated with the frequency of the poppet vibration is the source of the mechanical noise, and a high-frequency peak located from about 450 to 970 Hz associated with compressibility effects and the unsteady vortex motions is the source of the turbulence noise.

Keywords: fluid-structure interaction; FSI; multiphase flow; vehicle noise; valve vibration; numerical simulation; modelling; poppet valves; transient pressure force; compressibility effects; unsteady vortex motion.

DOI: 10.1504/IJVNV.2015.075169

International Journal of Vehicle Noise and Vibration, 2015 Vol.11 No.3/4, pp.273 - 312

Received: 26 May 2015
Accepted: 14 Oct 2015

Published online: 05 Mar 2016 *

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