TRANSFORMATION OF A WATER SLUG IN FREE FALL UNDER THE CONDITIONS OF EXPOSURE TO AN AIR FLOW ORTHOGONAL TO THE DIRECTION OF THE SLUG MOTION

An experimental study has been made of the infl uence of an orthogonal (side) air fl ow propagating with a velocity to 5 m/s on the phases of transformation of a water slug with an initial volume of 0.05–0.5 liter in free fall from a height of 3 m. Use was made of Phantom V411 and Phantom Miro M310 high-speed video cameras and a Tema Automotive software system with the function of continuous tracking. The laws of retardation of the phases of transformation of the water slug from the instant of formation to that of formation of a droplet cloud under the action of the air flow orthogonal to the direction of the slug motion, and also of the deceleration, removal, and destruction of the droplets and fragments of water separating from the slug surface, have been established.
An experimental study has been made of the infl uence of an orthogonal (side) air fl ow propagating with a velocity to 5 m/s on the phases of transformation of a water slug with an initial volume of 0.05–0.5 liter in free fall from a height of 3 m. Use was made of Phantom V411 and Phantom Miro M310 high-speed video cameras and a Tema Automotive software system with the function of continuous tracking. The laws of retardation of the phases of transformation of the water slug from the instant of formation to that of formation of a droplet cloud under the action of the air flow orthogonal to the direction of the slug motion, and also of the deceleration, removal, and destruction of the droplets and fragments of water separating from the slug surface, have been established.
Author:  R. S. Volkov, M. V. Zabelin, G. V. Kuznetsov and P. A. Strizhak
Keywords:  water slug, free fall, side air flow
Page:  864