ANZIAM J. 46(E) pp.C1170--C1187, 2005.

The topology of homogeneous isotropic turbulence with passive scalar transport

P. L. O'Neill

J. Soria

(Received 29 October 2004, revised 18 October 2005)

Abstract

Data obtained from direct numerical simulations of isotropic homogeneous turbulence and the diffusion of a scalar with an applied mean gradient is analysed using the topological techniques developed by Chong, Perry and Cantwell [Physics of Fluids A, 2:765-777, 1990]. Simulations were run at two different Taylor--Reynolds numbers and two different Schmidt numbers. Comparing the numerical results obtained, relationships between the scalar characteristics and the topological features of the flow are identified.

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Authors

P. L. O'Neill
Formerly of the Laboratory for Turbulence Research in Aerospace & Combustion (LTRAC), Monash University, Melbourne Australia; now at School of Mechanical Engineering, The University of Western Australia, Crawley, Western Australia 6009, Australia mailto:poneill@mech.uwa.edu.au
J. Soria
LTRAC, Monash University, Melbourne Australia

Published November 5, 2005. ISSN 1446-8735

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