Authors Kouris C., Tsamopoulos J. Abstract Nonlinear dynamics of the concentric, two-phase flow of two immiscible fluids in a circular tube is studied. The viscosity of the fluid around the axis of symmetry of the tube is larger than the viscosity of the fluid that surrounds it and gravity acts […]
2001
5 posts
Authors Kouris C., Tsamopoulos J. Abstract The concentric, two-phase flow of two immiscible fluids in a tube of sinusoidally varying cross-section is studied. This geometry is often used as a model to study the onset of different flow regimes in packed beds. Neglecting gravitational effects, the model equations depend on […]
Authors Pelekasis N.A., Tsamopoulos J.A. Abstract The flow of a gas stream past a flat plate under the influence of rainfall is investigated. As raindrops sediment on the flat plate, they coalesce to form a water film that flows under the action of shear from the surrounding gas stream. In […]
Authors Smyrnaios D.N., Tsamopoulos J.A. Abstract The axisymmetric squeeze flow of viscoplastic materials is examined using either the original Bingham constitutive equation or the approximate model suggested by Papanastasiou. Previous theoretical analyses of this problem, using the standard lubrication approximation, have led to conflicting results, whereby the material around the […]
Authors Pelekasis N.A., Economou K., Tsamopoulos J.A. Abstract Small amplitude oscillations of viscous, capillary bridges are studied in the presence of an electric dc field. The electric field is proposed as a means to maintain bridges longer than their perimeter and of uniform cylindrical shape. This is desired in the […]