Experimental investigation of viscous effects upon a breakup of droplets in high-speed air flow

Model of the deformation of a liquid droplet in a gas flow

“…This situation fosters a continued interest in the subject and the ongoing publication of new experimental [3][4][5][6] and theoretical [7][8][9] papers. Noteworthy among earlier experimental studies are [10][11][12][13][14][15][16][17][18][19], in which the basic laws of the phenomenon have been investigated.…”

“…It has been observed experimentally [6] that the dimensionless time of deformation of a droplet in an air shock up to a fixed stage (& 6 = idem) is essentially independent of We 0 (in the range 20 < We 0 < 100 for droplets of silicone oil, R = 100-250/~m). The calculated values of this time for fixed values of 5 and various values of R (We o) are given in Table 3 for the experimental conditions of [6] (M = 1.1). We see that the proposed model agrees satisfactorily with the observations in [6].…”

“…Wind tunnel experiments with water droplets (R = 1300 #m) at We 0 = 6.25 are reported in [4], and air shock experiments at M = 1.1 with water droplets (R = 110 #m, We o = 3.55) are reported in [6].…”

“…4 have been obtained by different experimental procedures. The breakup of droplets was observed in a free air jet (o = o0) in [10], in a vertical wind tunnel in [11], and in a shock tube in [14,4,6].…”

“…The calculated values of this time for fixed values of 5 and various values of R (We o) are given in Table 3 for the experimental conditions of [6] (M = 1.1). We see that the proposed model agrees satisfactorily with the observations in [6].…”