381 citations · 491 across the 8 of their papers we have counts for
8 papers
Protostellar disks subject to infall: a one-dimensional inviscid model and comparison with ALMA observations
Karim Shariff, Uma Gorti, Julio David Melon Fuksman
A new one-dimensional, inviscid, and vertically integrated disk model with prescribed infall is presented. The flow is computed using a second-order shock-capturing scheme. Include…
Viscous vortex layers subject to more general strain and comparison to isotropic turbulence
Karim Shariff, Gerrit Elsinga
Viscous vortex layers subject to a more general uniform strain are considered. They include Townsend's steady solution for plane strain (corresponding to a parameter ) in wh…
Investigation of a Vorticity-preserving Scheme for the Euler Equations
Darryl Seligman, Karim Shariff
We investigate the vorticity-preserving properties of the compressible, second-order residual-based scheme, "RBV2". The scheme has been extensively tested on hydrodynamical problem…
Advective balance in pipe-formed vortex rings
Karim Shariff, Paul S. Krueger
Vorticity distributions in axisymmetric vortex rings produced by a piston-pipe apparatus are numerically studied over a range of Reynolds numbers, , and stroke-to-diam…
Critical layers and protoplanetary disk turbulence
Orkan M. Umurhan, Karim Shariff, Jeffrey N. Cuzzi
A linear analysis of the zombie vortex instability is performed in a stratified shearing sheet setting for three model barotropic shear flows. The linear analysis is done by utiliz…
The Spherically Symmetric Gravitational Collapse of a Clump of Solids in a Gas
Karim Shariff, Jeffrey N. Cuzzi
Several mechanisms have been identified that create dense particle clumps in the solar nebula. The present work is concerned with the gravitational collapse of such clumps, idealiz…
The Gravitational instability of solids assisted by gas drag: slowing by turbulent mass diffusivity
Karim Shariff, Jeffrey N. Cuzzi
The Goldreich and Ward (1973) (axisymmetric) gravitational instability of a razor thin particle layer occurs when the Toomre parameter ( bein…
Towards planetesimals: dense chondrule clumps in the protoplanetary nebula
Jeffrey N. Cuzzi, Robert C. Hogan, Karim Shariff
We outline a scenario which traces a direct path from freely-floating nebula particles to the first 10-100km-sized bodies in the terrestrial planet region, producing planetesimals…