Structure of shock waves in a liquid with vapor bubbles

Waves in liquids with vapour bubbles

“…An increase in the initial static pressure po of the mixture leads not only to an increase in the velocity of shock waves with the same dimensionless intensity (Me) but also to an increase in the lengths and amplitudes of oscillatory waves behind the wave front, 8s well as in the distance of transition to the steady regime. This is connected of Me 5 1. with an increase in the initial mass of the bubbles and with the slowing down of condensation (Zuong Ngok Hai et al 1984).…”

“…An increase in pressure a t the non-steady stage of shock-wave propagation in these media becomes more pronounced with an increase in the initial pressure in the system and in shock intensity. For waves with an intensity of A€' , = 4 ( p , = 0.1 MPa, R, = 1 mm, a,, = 0.05, C,,/e, = 1130, Pe = 61 x lo3) in boiling water with vapour bubbles a t the non-steady stage, the estimated pressure increase is u r n a x = ( p r n a x -~o ) /~o = 7 2 U e (Zuong Ngok Hai et al 1984). A more significant enhancement of waves of higher intensity was observed experimentally by Borisov et al (1977Borisov et al ( , 1982, bubble fragmentation and vapour-condensation acceleration contributing to this.…”