Accessible ranges of turbulent and transitional flow in electromagnetic levitation experiments

Electromagnetic Levitation in reduced gravity has demonstrated great utility the measurement of thermophysical properties and study solidification metallic melts. Internal flow liquid metal samples is a critical parameter many these experiments. For example, turbulent sample prevents viscosity by oscillating droplet method, as measured damping oscillations property not fluid. In solidification, it been that internal changes lifetime metastable phase stainless steels almost two orders magnitude over experimentally accessible range. experiments, was quantified CFD models; however, models require an experimental input whether laminar or turbulent. To date, only transition to turbulence EML comes from experiments on Space Shuttle 1997 MSL-1 TEMPUS palladium-silicon alloy. On each melting cycle, tracer particles reveal nature flow. However, this phenomenon noticed examined after flight, so observations are available for very narrow range conditions. As results were ones available, they have boldly extrapolated conditions far original experiment. Furthermore, while evidence measurements germanium shows positioner alone can drive flow, there no positioner-dominated flows. more fundamental level, flows constrained free surface drop, like walls drop does support shear stresses, unlike Better quantification may lead insights into transition. Closing gap requires combination will quantify wide possible ISS-EML. Modeling presented here; planned ISS-EML Batch 4, estimated 2024.