Noise generated by impingement of a planar jet on a flat plate

Authors

  • David Arthurs Dept. of Mechanical Engineering, McMaster University, 1280 Main Street W., Ont. L8S 4L7, Canada
  • Samir Ziada Dept. of Mechanical Engineering, McMaster University, 1280 Main Street W., Ont. L8S 4L7, Canada

Keywords:

Aluminum, Jet aircraft, Nozzles, Centrifugal blower, Inclination angle, Infinite flat plate, Uniform flow distribution

Abstract

Acoustic excitation of planar jets impinging on an infinite flat plate, as well as the effects of plate inclination on the generated acoustic tones were examined. All experimental work was conducted using a planar air jet constructed out of Plexiglas&reg and Aluminum. A series of internal baffles located immediately upstream of the nozzle outlet were utilized to ensure uniform flow exiting across the jet span. The jet was pressurized by a 10 HP Sonic Air Systems 70 Series centrifugal blower connected to a piping system and plumbed to an air plenum feeding both ends of the jet, to ensure uniform flow distribution. The effect of jet-plate inclination, both in the stream- wise and span-wise directions, was investigated as a method to reduce the intensity of the tone generation of the jet-plate tones. The amplitude of the acoustic jet-plate tones was found to be much more sensitive to span-wise inclination than to stream-wise inclination angle.

Published

2007-09-01

How to Cite

1.
Arthurs D, Ziada S. Noise generated by impingement of a planar jet on a flat plate. Canadian Acoustics [Internet]. 2007Sep.1 [cited 2021Apr.16];35(3):28-9. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1887

Issue

Section

Proceedings of the Acoustics Week in Canada