Universality in passively advected hydrodynamic fields: the case of a passive vector with pressure
Dipartimento di Fisica and INFM, Universita' di Roma "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Roma,
2 University of Twente, Department of Applied Physics, Enschede, The Netherlands
Corresponding author: a firstname.lastname@example.org
Published online: 15 November 2001
Universality of statistical properties of passive quantities advected by turbulent velocity fields at changing the passive forcing mechanism is discussed. In particular, we concentrate on the statistical properties of an hydrodynamic system with pressure. We present theoretical arguments and preliminary numerical results which show that the fluxes of passive vector field and of the velocity field have the same scaling behavior. By exploiting such a property, we propose a way to compute the anomalous exponents of three dimensional turbulent velocity fields. Our findings are in agreement within 5% with experimental values of the anomalous exponents.
PACS: 47.27.-i – Turbulent flows, convection, and heat transfer
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001