Turbulence in dilute polymer solutions has gained more and more interest over the last decades. Original studies were mainly oriented to drag reduction observed in wall bounded flows, however, recently studies have moved from applied problems to a more fundamental approach. In details a renewed interest has been devoted to problems different from bounded flows such as jets or basically homogeneous flows. On the other hand from a theoretical viewpoint some relevant development have appeared. In this contribution the analysis of spectral budgets of homogeneous and isotropic turbulence based on the set of equations derived in [1] is proposed. The study is performed on low-Reynolds number numerical results obtained for a dilute polymer solution in the mild stretch regime.

Budgets of polymer free energy in homogeneous turbulence

DE ANGELIS, ELISABETTA;
2009

Abstract

Turbulence in dilute polymer solutions has gained more and more interest over the last decades. Original studies were mainly oriented to drag reduction observed in wall bounded flows, however, recently studies have moved from applied problems to a more fundamental approach. In details a renewed interest has been devoted to problems different from bounded flows such as jets or basically homogeneous flows. On the other hand from a theoretical viewpoint some relevant development have appeared. In this contribution the analysis of spectral budgets of homogeneous and isotropic turbulence based on the set of equations derived in [1] is proposed. The study is performed on low-Reynolds number numerical results obtained for a dilute polymer solution in the mild stretch regime.
2009
Advances in Turbulence XII
371
374
E. De Angelis; C.M. Casciola; R. Piva
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/78227
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