Ultrasonic Absorption by Ice Crystals in Supercooled Water

Abstract

The ultrasonic absorption (2α) by the ice crystals in supercooled water has been considered on the basis of Lamb’s theory which is two-fold, i.e. (i) to study the effect of ultrasound on the growing crystals and (ii) to study the variation of ultrasonic absorption with varying parameters like (A) frequency (ω), (B) radius of the ice crystals (a) and (C) kinematic viscosity of liquid (μ) separately.
It has been found that the effect of ultrasound is to increase rate of freezing due to the small interfacial absorption alone by the crystals. Furthermore, it is also of interest to note a maximum in the curve 2α-μ.