Heat diffusion from a sonoluminescing gas bubble

Heat diffusion from a sonoluminescing gas bubble which produces high temperature and pressure environment adjacent to the bubble wall was considered by solving the heat diffusion equation numerically. The boundary conditions employed in this calculation are the time varying bubble wall temperature obtained from the analytical solutions. The thermal boundary layer was found to be decreased rapidly during the collapse as expected. The heat flux at the collapse exceed 100 GW/m(2). After the collapse a soliton like heat wave which was generated due to the rapid increase in the bubble wall temperature at/near the collapse for the sonoluminescing gas bubble was found to propagate through the medium. On the other hand, the liquid temperature near the bubble wall decreases after the collapse for the nonsonoluminescing case.