9 papers · 1 filter
Sequence of bifurcations of natural convection of air in a laterally heated cube with perfectly insulated horizontal and spanwise boundaries
Alexander Gelfgat
A sequence of three steady - oscillatory transitions of buoyancy convection of air in a laterally heated cube with perfectly thermally insulated horizontal and spanwise boundaries…
Instability of stratified two-phase flows in rectangular ducts
Alexander Gelfgat, Neima Brauner
The linear stability of stratified two-phase flows in rectangular ducts is studied numerically. The linear stability analysis takes into account all possible infinitesimal three-di…
Instability of steady flows in helical pipes
Alexander Gelfgat
A parametric numerical study of three-dimensional instability of steady flows in a helical pipe of arbitrary curvature and torsion is carried out. The computations are performed by…
Instability of natural convection in a laterally heated cube with perfectly conducting horizontal boundaries
Alexander Gelfgat
Oscillatory instability of buoyancy convection in a laterally heated cube with perfectly thermally conducting horizontal boundaries is studied. The effect of the spanwise boundarie…
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…