• Publications
  • Influence
Persistent small scale anisotropy in homogeneous shear flows.
  • Pumir, Shraiman
  • Physics, Medicine
  • Physical review letters
  • 23 October 1995
  • 79
  • 2
Exponential tails and random advection.
  • 71
  • 1
Simple models of non-Gaussian statistics for a turbulently advected passive scalar.
  • Holzer, Pumir
  • Physics, Medicine
  • Physical review. E, Statistical physics, plasmas…
  • 1993
We study the probability distribution of a passive scalar undergoing turbulent mixing in the presence of a mean scalar gradient. Kerstein's model, which describes the turbulent mixing process as aExpand
  • 18
  • 1
Analytic theory of the Saffman-Taylor fingers.
A complete analytic solution is presented for the selection of symmetric Saffman-Taylor fingers, in the small\char21{}surface-tension limit. In a previous paper [Combescot et al., Phys. Rev. Lett.Expand
  • 30
Finite-time singularities in the axisymmetric three-dimension Euler equations.
  • Pumir, Siggia
  • Physics, Medicine
  • Physical review letters
  • 9 March 1992
For pointlike singularities localized well away from the symmetry axis, axisymmetric flows with swirl are arbitrarily well approximated by two-dimensional Boussinesq convection. An adaptive meshExpand
  • 25
Shape selection of Saffman-Taylor fingers.
  • 16
Numerical simulation of interacting vortex tubes.
  • Pumir, Kerr
  • Physics, Medicine
  • Physical review letters
  • 20 April 1987
The structure of the cores of interacting vortex tubes in three-dimensional incompressible hydrodynamics has been simulated by a pseudospectral method. A fast reconnection is observed for ReynoldsExpand
  • 41
Vortex morphology and Kelvin's theorem.
  • Pumir, Shraiman, Siggia
  • Physics, Medicine
  • Physical review. A, Atomic, molecular, and…
  • 1 April 1992
The Clebsch form of the Euler equations provides an intuitive picture as to how the circulation constraints direct the spatial organization of vorticity and favor the formation of vortex sheets.Expand
  • 15
Incipient singularities in the Navier-Stokes equations.
  • Siggia, Pumir
  • Physics, Medicine
  • Physical review letters
  • 21 October 1985
  • 24
Equation describing wrinkled flame fronts.
  • Pumir
  • Physics, Medicine
  • Physical review. A, General physics
  • 1985
  • 1