Application of the Model of a Source of Shock-Induced Ejection of Metals Based on the Richtmyer-Meshkov Instability Physics for Calculating the Spectrum of Tin and Lead Particle Sizes
A.B. Georgievskaya
Russian Federal Nuclear Center, Institute of Experimental Physics, Sarov, Russia
Keywords: particles, instability, fragmentation, shock wave
Abstract
The model of a source of shock-induced ejection based on the Richtmyer-Meshkov instability physics and developed for calculating the ejected mass of metal particles and its velocity distribution in the flow is applied to calculate the particle size distribution. The model is developed form metals transforming to a liquid state after the shock wave impact. It is shown that one has to know not only the density and surface tension of the liquid medium, but also the initial amplitude and wavelength of disturbances, as well as the shock wave profile for predicting the particle size spectrum in the case of liquid medium ejection. According to the theory developed, the particle size in the flow is largely determined by the disturbance wavelength than by the initial amplitude. The results are compared with experimental data on the size of nanoparticles ejected from narrow bands with initial disturbances on the free surface on tin and lead samples.
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