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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Dynamics of Viscoelastic Wall Turbulence in Different Ranges of Scales
verfasst von : E. De Angelis, C. M. Casciola, R. Piva
Erschienen in: Progress in Turbulence III
Verlag: Springer Berlin Heidelberg
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We address the dynamics of viscoelastic wall turbulence by means of a generalization of a scale-by-scale approach extended to both an inhomogeneous and viscoelastic case. Analysing the results obtained by a series of Direct Numerical Simulations of a dilute polymer solution in a plane channel, we focus our attention on the alteration of the inertial transfer across the scales and the polymer scaledependent term in the budget for the second order velocity structure function. We confirm that both these observables lead to a scenario were the main alteration of turbulence structure in a channel flow occurs in the buffer layer.