Analytical Model of the Time Developing Turbulent Boundary Layer

Aerospace Engineering; Anna Pomyalov (Dept of Chemical Physics; Antonino Ferrante; Irvine; Israel); Rehovot; Said Elghobashi (Dept. of Mechanical; Univ. of California; USA); Victor S. L'vov

arxiv: 0706.0422 · v1 · submitted 2007-06-04 · 🌊 nlin.CD

Analytical Model of the Time Developing Turbulent Boundary Layer

Victor S. L'vov , Anna Pomyalov (Dept of Chemical Physics , Weizmann Inst. of Sci. , Rehovot , Israel) , Antonino Ferrante , Said Elghobashi (Dept. of Mechanical , Aerospace Engineering

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Univ. of California Irvine USA)

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keywords modelanalyticalboundaryturbulentlayerreynoldsstresstd-tbl

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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. Our analytical model is, to the best of our knowledge, the first of its kind for TD-TBL.

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Analytical Model of the Time Developing Turbulent Boundary Layer

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