81 citations · 293 across the 7 of their papers we have counts for
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Geometry of intensive scalar dissipation events in turbulence
Dan Kushnir, Joerg Schumacher, Achi Brandt
Maxima of the scalar dissipation rate in turbulence appear in form of sheets and correspond to the potentially most intensive scalar mixing events. Their cross-section extension de…
Links between dissipation, intermittency, and helicity in the GOY model revisited
John C. Bowman, Charles R. Doering, Bruno Eckhardt +3
High-resolution simulations within the GOY shell model are used to study various scaling relations for turbulence. A power-law relation between the second-order intermittency corre…
Lagrangian tracers on a surface flow: the role of time correlations
Guido Boffetta, Jahanshah Davoudi, Bruno Eckhardt +1
Finite time correlations of the velocity in a surface flow are found to be important for the formation of clusters of Lagrangian tracers. The degree of clustering characterized by…
Sign-symmetry of temperature structure functions
Konstantinos G. Aivalis, Susan Kurien, Joerg Schumacher +1
New scalar structure functions with different sign-symmetry properties are defined. These structure functions possess different scaling exponents even when their order is the same.…
Study of scalar gradient fields by geometric measure theory
Joerg Schumacher
Upper bounds of the Hausdorff volume of scalar gradient field graphs are derived by means of geometric measure theory. The approach reproduces that scalar gradient fields along a m…
Geometric features of the mixing of passive scalars at high Schmidt numbers
Joerg Schumacher, Katepalli R. Sreenivasan
The mixing of passive scalars of decreasing diffusivity, advected in each case by the same three-dimensional Navier-Stokes turbulence, is studied. The mixing becomes more isotropic…