Cavitation induced by explosion in a model of ideal fluid

TL;DR

This paper investigates how explosions in a superfluid model can cause cavitation bubbles, analyzing the process through numerical simulations and self-similar solutions to understand bubble dynamics and emitted excitations.

Contribution

It introduces a numerical and analytical study of explosion-induced cavitation in a superfluid model, linking energy loss to radiated waves and providing insights into bubble rebound phenomena.

Findings

Explosion can induce cavitation bubbles at high energy levels.

Rebound bubbles are explained by energy loss through radiated waves.

Self-similar solutions describe early-stage explosion dynamics and excitation wave numbers.

Abstract

We discuss the problem of an explosion in the cubic-quintic superfluid model, in relation to some experimental observations. We show numerically that an explosion in such a model might induce a cavitation bubble for large enough energy. This gives a consistent view for rebound bubbles in superfluid and we indentify the loss of energy between the successive rebounds as radiated waves. We compute self-similar solution of the explosion for the early stage, when no bubbles have been nucleated. The solution also gives the wave number of the excitations emitted through the shock wave.