Record number :
46614
Title of article :
Fluctuations of Turbulent Bed Shear Stress
Author/Authors :
Cheng، Nian-Sheng نويسنده , , Law، Adrian Wing-Keung نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2003
Pages :
-125
From page :
126
To page :
0
Abstract :
With the assumption that the bed shear stress fluctuates in a lognormal fashion, the probability density function (PDF) of the standardized bed shear stress is derived as a function of the relative shear stress intensity. The PDF is more skewed with larger relative intensities, but approaches a Gaussian function when the relative intensity is small. The computed PDF agrees well with the reported experimental data for flows over a smooth boundary. The higher-order moments of the bed shear stress, skewness, and kurtosis, are shown analytically to be also dependent on the relative intensity. The theoretical dependencies are then compared to a number of measurements available in the literature. The Reynolds number effect on the relative intensity is also discussed.
Keywords :
TiNi film , transformation , Oriented martensite , Self-accommodating martensite
Journal title :
JOURNAL OF ENGINEERING MECHANICS
Journal title :
JOURNAL OF ENGINEERING MECHANICS
Serial Year :
2003
Link To Document :
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