Cryospheric phase-change beyond Stefan's problem - how predictive can we be?
This presentation focuses on the physics-based prediction of complex solid-liquid phase-change processes in the cryosphere. A classical, yet highly idealized approach to model such phase-change processes is referred to as the Stefan problem. Many applications, however, are characterized by physical regimes that do not comply with the idealized assumptions of this classical model. Here, we will concentrate on convection-coupled phase-change  as well as phase-change in the presence of a global contact forces (so-called contact phase-change) , both of which are rather challenging from a model development point of view. We will introduce tailored computational models, show their feasibility (when being leveraged for the model-based development of a cryo-robot for extraterrestrial ice exploration ), and close with a discussion of their potential and limitation regarding the envisioned process predictability.