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DY: Fachverband Dynamik und Statistische Physik

DY 68: Poster: Complex Fluids, Glasses, Granular

DY 68.11: Poster

Donnerstag, 15. März 2018, 15:30–18:00, Poster A

Growth and Interaction of Colloid Nuclei under Microgravity — •Lou Kondic¹, Michael Lam¹, Boris Khusid¹, and William Meyer² — ¹NJIT, Newark, NJ, USA — ²Glenn Research Center, Cleveland, OH, USA

We have developed a model describing the growth and interaction of colloid nuclei. The model is based on a coupled diffusion problem for the solid and liquid phase, combined with the consistent boundary conditions involving osmotic pressure balance, including interfacial tension. The motion of the solidification front is modeled based on the Wilson-Frenkel law. The single nuclei model is validated by considering various asymptotic limits, as well as by comparing the results to ones available in the literature. The multiple nuclei model allows, for the first time, for the careful computational investigation of the interaction between evolving nuclei. The preliminary comparison with and interpretation of data obtained on the International Space Station (available at psi.nasa.gov) as well as ground-based experiments, will be discussed.

Acknowledgment: This project is supported by the NASA Grant NNX16AQ79G.