Representation of a 1 N Power Law Boundary Layer in the Sheared Flow Acoustic Transmission Problem
A method is developed by which a 1 N power law boundary layer profile can be conveniently represented in studies of the transmission of sound in ducts with sheared flow. The method consists of an analytical solution near the duct walls which circumvents the singular behaviour in the conventional numerical solution arising because of the infinite velocity gradient introduced by the assumed boundary layer profile. Numerical results are compared with results obtained using the sinusoidal boundary layer profile. It is found that at a given boundary layer thickness the 1 N power law boundary layer behaves like a much thinner shear layer of sinusoidal type. © 1972.
W. Eversman, "Representation of a 1 N Power Law Boundary Layer in the Sheared Flow Acoustic Transmission Problem," Journal of Sound and Vibration, Elsevier, Jan 1972.
The definitive version is available at http://dx.doi.org/10.1016/0022-460X(72)90717-1
Mechanical and Aerospace Engineering
Article - Journal
© 1972 Elsevier, All rights reserved.