Wall Pressure Fluctuations in a Turbulent Boundary Layer

Wall Pressure Fluctuations and Flow Induced Noise in a Turbulent Boundary Layer over a Bump

Direct numerical simulations of a turbulent boundary layer over a bump were performed to examine the effects of surface longitudinal curvature on wall pressure fluctuations (pw) and flow induced noise. Turbulence statistics and frequency spectra were obtained to elucidate the response of wall pressure fluctuations to the longitudinal curvature and to the corresponding pressure gradient. Wall pr...

Wall-pressure Fluctuations and Pressure-velocity Correlations in Turbulent Boundary Layers

Estimation of pressure fluctuations in a turbulent boundary layer based on vibro-elastic models

A simple, but scientifically rigorous, framework is proposed for estimation of effectiveness of elastic materials for the reduction of pressure fluctuations. The framework employs the intrinsic correspondence between a transformation of vorticity perturbations into acoustic waves at the elastic boundary and the conversion of transverse (shear) waves to radiated longitudinal (pressure) waves. Th...

Wall pressure and coherent structures in a turbulent boundary layer on a cylinder

Stephen R. Snarski and Richard M. Lueptow Journal of Fluid Mechanics / Volume 286 / March 1995, pp 137 ­ 171 DOI: 10.1017/S0022112095000681, Published online: 26 April 2006 Link to this article: http://journals.cambridge.org/abstract_S0022112095000681 How to cite this article: Stephen R. Snarski and Richard M. Lueptow (1995). Wall pressure and coherent structures in a turbulent boundary layer o...

Pressure and shear stress measurements at the wall in a turbulent boundary layer on a cylinder

The fluctuating wall shear stress, wall pressure, and streamwise velocity were measured simultaneously in a cylindrical boundary layer at a momentum thickness Reynolds number of Reu52160 and a boundary layer thickness to cylinder radius ratio of d/a55 using a hot wire wall shear stress probe mounted just upstream of a hearing aid microphone and a hot wire velocity probe. Variable Interval Time ...