Experimental and Analytical Study of Vapor Explosions in Stratified Geometries.

摘要

Vapor explosions in stratified geometries were experimentally studied. The unpredictable stability of stratified systems in a horizontal orientation made them poor experimental subjects. Stratified explosions were successfully generated in a vertical, transparent, fully confined pressure vessel. The explosion propagated with a sharp front and a narrow reaction zone where the two liquids mixed and the cold liquid boiled. Behind the explosion wave the system was in local equilibrium. If two liquid layers of the same thickness mixed and came to 100% equilibrium they would need a total mixture depth of 6 mm to explain the measured equilibrium pressure. Less efficient reactions would require greater mixing depths. A comprehensive model of stratified explosions must include the strong two-dimensional effects. (ERA citation 13:037615)