K. Schmidmayer is presenting ECOGEN at an international workshop on bubbles. Besides presenting the software itself, the presentation includes results of simulations, in particular regarding the behaviour of bubbles near urinary stone surfaces, the collapse of gas bubbles above crevices, and cavitating flows around rocket turbopumps. Additionally, studies of impulse-driven release of gas-encapsulated droplets and shock-induced cavitation in droplets. Recent advancements are also presented which explore the interaction between single cavitation bubbles and highly deformable solids, providing valuable insights into fluid-structure interactions.

K. Schmidmayer is presenting investigations of the dynamics of cavitation bubbles around kidney stones during extracorporeal shock wave lithotripsy. Through a combination of in-situ experiments and diffuse-interface-method simulations, a peculiar interaction between stone-attached and distant bubbles is observed, resulting in a notable pressure increase at the distant-bubble jet-impact site.

A new release, ECOGEN_v4.0, is available on GitHub. More information here.

K. Schmidmayer is presenting investigations of shock-induced cavitation within a droplet which involves multiphase mechanisms. Within the context of heterogeneous nucleation, he introduces a thermodynamically well-posed multiphase numerical model accounting for phase compression and expansion, which relies on a finite pressure-relaxation rate formulation. He elucidates the critical Mach number from which cavitation is likely to occur and he provides a phenomenological description.

K. Schmidmayer is presenting interactions between waves and interfaces in the diffuse interface approach. He highlights the issue coming from the appearance of a wave-trapping phenomenon. Then he presents a thermodynamically-consistent pressure-disequilibrium model with finite pressure-relaxation rate to overcome the difficulties inherent in the computation of these interactions.