First Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP1
REYNOLDS NUMBER DEPENDENCE AND INVARIANT ASSUMPTION IN TURBULENT BOUNDARY LAYER
pages 303-305
DOI: 10.1615/TSFP1.500
要約
The logarithmic velocity region is considered in zero-pressure-gradient turbulent boundary layers. We propose a new definition of log-law region with using the probability profiles of stream wise velocity fluctuation. The measure called Kullback Leibler divergence is applied to distinguishing the probability profiles. The ratio of boundary layer thickness, δ, and the upper end of logarithmic region, δL, is investigated, and also the Reynolds number dependence of pdf profile is mentioned.