Velocity Field in a Vertical Foam Film

Analysis of Laminar Film Condensation on a Vertical Plate

Velocity Modeling in a Vertical Transversely Isotropic Medium Using Zelt Method

In the present paper, the Zelt algorithm has been extended for ray tracing through an anisotropic model. In anisotropic media, the direction of the propagated energy generally differs from that of the plane-wave propagation. This makes velocity values to be varied in different directions. Therefore, velocity modeling in such media is completely different from that in an isotropic media. The vel...

Velocity fluctuations in a steadily sheared model foam.

Numerical simulations are conducted to calculate velocity fluctuations in a simple two-dimensional model of foam under steady shear. The width of the velocity distribution increases sublinearly with the shear rate, indicating that velocity fluctuations are large compared to the average flow at low shear rates (stick-slip flow) and small compared to the average flow at large shear rates. Several...

Composite Vertical Structure of Vertical Velocity in Nonprecipitating Cumulus Clouds

Vertical transects of Doppler vertical velocity data, obtained from an airborne profiling millimeter-wave cloud radar, are composited for a large number of cumulus clouds (Cu) at various stages of their life cycle, to examine typical circulations patterns. The Cu clouds range in depth between ;500 and 6000 m and are generally nonprecipitating. They were sampled on board the University of Wyomin...

Indentation of aluminium foam at low velocity

The indentation behaviour of aluminium foams at low velocity (10m/s ∼ 30m/s) was investigated both in experiments and numerical simulation in this paper. A flat-ended indenter was used and the force-displacement history was recorded. The Split Hopkinson Pressure bar was used to obtain the indentation velocity and forces in the dynamic experiments. Because of the low strength of the aluminium fo...