THE FEATURES OF THE FILM FLOW OF LIQUID NITROGEN OVER THE STRUCTURED SURFACES

Experimental results on hydrodynamics of cryogenic liquid film flow over the surface of the single elements of the structured packing are presented. Based on the comparison of experimental data, the effect of microtexture and perforation on the zones of liquid film spreading over a corrugated surface is shown for different values of the film Reynolds number. The results of experiments on dependence of a relative portion of liquid held in a single irrigated channel of the corrugated plates with different thicknesses on irrigation degree are presented. It is shown that microtexture, its direction relative to the gravity has a significant effect on redistribution of the local flow rate of liquid flowing over the surface with complex geometry.

Keywords:
flowing liquid films, wetting, structured packings, microtexture. 
УДК 532.51

THE FEATURES OF THE FILM FLOW OF LIQUID NITROGEN OVER THE STRUCTURED SURFACES