Vibration of and radiated acoustic power from a simply-supported panel excited by a turbulent boundary layer excitation at low Mach number
The general context of this study is to perform cross-validation of analytical and numerical calculations of vibroacoustic response of panels under a turbulent boundary layer excitation. This article focuses on the specific case of a rectangular aluminum panel with controlled simply-supported
boundary conditions, and tested in a lowspeed anechoic wind tunnel (Mach number ≤ 0.12). An underlying goal is to setup a microphone array for directly estimating the radiated sound power from the panel. The vibration of and radiated sound power from the panel are first
estimated under a shaker mechanical excitation so as to verify agreement with theoretical calculations and the relevance of the proposed shoebox-shaped microphone array. Similar measurements are then conducted under a turbulent boundary layer excitation. Finally, estimated radiation efficiencies
under point mechanical and turbulent excitations are compared.
Document Type: Research Article
Affiliations: Groupe d▙acoustique de l▙université de Sherbrooke
Publication date: 01 July 2019
NCEJ is a peer reviewed Technical journal published every two months. The papers published in NCEJ cover general topics related to noise control engineering, ranging from fundamental research to applied case studies and histories.
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