Analytical Model of the Time Developing Turbulent Boundary Layer
V. S. L'vov, A. Pomyalov, A. Ferrante+, S. Elghobashi+
Department of Chemical Physics, The Weizmann Institute of Science, Rehovot 76100, Israel
+Dept of Mechanical and Aerospace Engineering, University of California, Irvine, CA 92697, USA
PACS: 42.27.-i
Abstract
We present an analytical model for the time-developing turbulent
boundary layer (TD-TBL) over a flat plate. The model provides
explicit formulae for the temporal behavior of the wall-shear
stress and both the temporal and spatial distributions of the mean
streamwise velocity, the turbulence kinetic energy and Reynolds
shear stress. The resulting profiles are in good agreement with
the DNS results of spatially-developing turbulent boundary layers
at momentum thickness Reynolds number equal to 1430 and
2900 [5 - 7]. Our analytical model is, to the best of our
knowledge, the first of its kind for TD-TBL.