15 research outputs found
Numerical simulation of a liquid drop freely oscillating
No full textInternational audienceno abstrac
Free Surface Deformation of Thermo-Solutocapillary Convection in Axisymmetric Liquid Bridge
No full textOnset and Nonlinear Regimes of Convection of a Binary Mixture in Rectangular Cavity Heated from Below
No full textA Hysteresis of Supercritical Water Convection in an Open Elongated Cavity at a Fixed Vertical Heat Flux
No full text2D unsteady motion and deformation of a gaseous bubble in a vibrating liquid at zero gravity
No full textInternational audienceno abstrac
Tailoring of dendritic microstructure in solidification processing by crucible vibration
No full textWe analyzed the effects of both natural convection and forced flows on solid–liquid interface morphology during
upward Bridgman solidification of metallic alloys. Experiments were carried out on Al–3.5wt% Ni alloy, for a
cylindrical sample. The influence of natural convection induced by radial thermal gradient on solidified microstructure
was first analyzed as a function of the pulling rate. Then, the influence of axial vibration on solidification microstructure
was experimentally investigated by varying vibration parameters (frequency and amplitude). Experimental results
demonstrated that vibrations could be used to either attenuate fluid flow in the melt and obtain a uniform dendritic
pattern or to promote a fragmented dendritic microstructure. However, no marked effect was observed for cellular
growth. This pointed out the critical role of the mushy zone in the interaction between fluid flow and solidification
microstructure
Marangoni and Natural Convection in a Horizontal Layer of Viscoplastic Fluid with Concentration Dependent Yield Stress. Exact Analytical Solutions
No full text
