56 citations · 240 across the 23 of their papers we have counts for
4 papers · 1 filter
A comparative study on instability of steady flows in helical pipes
Alexander Gelfgat
A computational study of three-dimensional instability of steady flows in a helical pipe of arbitrary curvature and torsion is carried out for the first time. The problem is formul…
Computational modeling of magnetoconvection: effects of discretization method, grid refinement and grid stretching
A. Gelfgat, O. Zikanov
The problem of natural convection in a laterally heated three-dimensional cubic cavity under the action of an externally imposed magnetic field is revisited. Flows at the Rayleigh…
Global Galerkin method for stability studies in incompressible CFD and other possible applications
Alexander Gelfgat
In this paper the author reviews a version of the global Galerkin that was developed and applied in a series of earlier publications. The method is based on divergence-free basis f…
Non-modal stability analysis of stratified two-phase channel flows
Ilya Barmak, Alexander Gelfgat, Amos Ullmann +1
The non-modal transient growth of perturbations in horizontal and inclined channel flows of two immiscible fluids is studied. 3D perturbations are examined in order to find the opt…