Noise produced by a tandem diaphragm: Experimental and numerical investigations

Karban U., Kucukcoskun K., Ogus G., Schram C., Sovardi C., Polifke W.

20th AIAA/CEAS Aeroacoustics Conference 2014, Atlanta, GA, United States Of America, 16 - 20 June 2014, (Full Text) identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.2514/6.2014-3225
  • City: Atlanta, GA
  • Country: United States Of America
  • Middle East Technical University Affiliated: No

Abstract

The aeroacoustic installation effects of a ducted tandem diaphragm on are investigated experimentally and numerically. Two different numerical methods are applied to estimate the noise prediction: a scale-resolved approach and a stochastic approach. A Helmholtz solver is used to propagate the noise sources obtained by each of these two methods inside the duct. Comparison with experiments is performed via acoustic and flow speed measurements.