Sound-turbulence interaction in low Mach number duct flow | Zendy

Chenyang Weng | Zendy; Ardeshir Hanifi | Zendy; Susann Boij | Zendy

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Sound-turbulence interaction in low Mach number duct flow

Author(s) -

Chenyang Weng,

Ardeshir Hanifi,

Susann Boij

Publication year - 2013

Publication title -

28th aiaa/ceas aeroacoustics 2022 conference

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.2013-2024

Subject(s) - mach number , turbulence , acoustics , duct (anatomy) , computer science , physics , mechanics , medicine , pathology

When sound waves propagate in ducts with the presence of turbulent flow, turbulent stresses can cause extra attenuation of the wave in addition to that caused by viscothermal effects. Different models for the turbulent stress acting on the sound waves are investigated in this study, and they are applied to compute the wall shear stress impedance of sound waves. Among these models the non-equilibrium model proposed by the present authors in another paper is studied in details. Attempt of including mean flow convection effect in the non-equilibrium model is made. The resulting modified model is then applied to compute the wave attenuation, and the results are compared with experimental data.

QC 20130710

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