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Reduced description and modelling of small-scale turbulence by means of a tensorial turbulent viscosity

Cimarelli, Andrea, Crivellini, Andrea, Abbà, Antonella and Germano, Massimo 2019. Reduced description and modelling of small-scale turbulence by means of a tensorial turbulent viscosity. Presented at: iTi Conference in Turbulence 2018, Bertinoro, Italy, 3-7 September 2018. Published in: Orlu, Ramis, Talamelli, Alessandro, Peinke, Joachim and Oberlack, Martin eds. Progress in Turbulence VIII: Proceedings of the iTi Conference in Turbulence 2018. Springer, pp. 21-26. 10.1007/978-3-030-22196-6_4

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Abstract

Starting from an alternative decomposition of the subfilter stresses, we present a tensorial turbulent viscosity for a reduced description of small-scale turbulence. The formalism is based on velocity increments and, through the analysis of Direct Numerical Simulation data, is recognized to capture relevant flow features that are actually missed in scalar approaches.

Item Type: Conference or Workshop Item (Paper)
Date Type: Published Online
Status: Published
Schools: Engineering
Publisher: Springer
ISBN: 9783030221959
Last Modified: 11 Dec 2019 14:58
URI: http://orca.cf.ac.uk/id/eprint/125807

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