Abstract
A passive scalar, advected by a turbulent flow, with an imposed mean gradient, shows a remarkable spatial organization. The scalar is well mixed in large regions of space, and large gradients build up in ‘cliff’ like structures. This leads to a small-scale anisotropy, easily seen at the level of the skewness (third order moment). The possible implications of this effect in turbulent shear flow are discussed.
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© 1995 Springer-Verlag Berlin Heidelberg
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Pumir, A. (1995). Turbulent mixing: small-scale properties. In: Meneguzzi, M., Pouquet, A., Sulem, PL. (eds) Small-Scale Structures in Three-Dimensional Hydrodynamic and Magnetohydrodynamic Turbulence. Lecture Notes in Physics, vol 462. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0102398
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DOI: https://doi.org/10.1007/BFb0102398
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