Experimental Investigations of the Turbulent Boundary Layer for Biomimetic Surface with Spine-Covered Protrusion Inspired by Pufferfish Skin

2021 ◽  
Vol 46 (3) ◽  
pp. 2865-2875
Author(s):  
Honggen Zhou ◽  
Yesheng Zhu ◽  
Guizhong Tian ◽  
Xiaoming Feng ◽  
Yaosheng Zhang
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Experimental Investigations ◽  
Biomimetic Surface

A Comparison of Turbulent Boundary Layer Wall-Pressure Spectra

1992 ◽  
Vol 114 (3) ◽  
pp. 338-347 ◽  
Author(s):  
W. L. Keith ◽  
D. A. Hurdis ◽  
B. M. Abraham
Keyword(s):  
Numerical Simulation ◽  
Boundary Layer ◽  
Reynolds Number ◽  
Turbulent Boundary Layer ◽  
Scaling Laws ◽  
Wall Pressure ◽  
Experimental Investigations ◽  
Length Scale ◽  
Momentum Thickness ◽  
Insight Into

Turbulent boundary layer wall-pressure spectra from various experimental investigations and a recent numerical simulation are presented. The spectra are compared in nondimensional form with three commonly used scaling laws. Attenuations resulting from inadequate sensor spatial resolution are shown to be of primary importance at the higher frequencies. The dependence of the scaling laws on momentum thickness Reynolds number is discussed. The ratio of the outer to the inner boundary layer length scale is shown to provide insight into the observed trends in the spectra.

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