Abstract:
Cavitation is a process of formation of gas or vapor filled bubbles
similar to boiling in heated water.
It is well known that practically any liquid usually contains numerous
microscopically small bubbles.
The pressure change of a big enough intensity may generate the process
of cavitation. This occurs in part
on the surface of a high-speed vessel propeller. An ultrasonic wave
may also be responsible for the cavitation.
The motion of a cavitation gas bubble in a liquid under the action
of an alternating pressure field is being
investigated. Nolting - Neppiras second order differential equation
to describe radial pulsation is used.
An analytical asymptotic solution to the equation is derived for the
collapsing stage of the motion.
The minimum radius of the collapsing bubble before it starts to grow
again is obtained in the form of
an algebraic expression.