Abstract
The shear convection in the Foton shear cell was investigated quantitatively and interpreted as an additional diffusion-like mixing. Diffusion experiments were done under 1g and µg (Foton-M2 mission June 2005). Since the measured mean squarediffusiondepth (MSDD) is a linear function of time, the offset represents the additional mass transport (and the averaging effect due to the analysis by Atom Absorption Spectroscopy, AAS). The offset is 1–3% of the MSDD and can be used to eliminate this systematic error. The influence of the liquid’s viscosity on the shear convection is discussed, using a simple fluid dynamical model. The absence of buoyancy convection in 1g-experiments was shown by comparison with the µg-result.
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Suzuki, S., Kraatz, KH. & Frohberg, G. The effect of shear convection on diffusion measurements in liquid metals using the foton shear cell. Microgravity Sci. Technol 18, 155–159 (2006). https://doi.org/10.1007/BF02870400
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DOI: https://doi.org/10.1007/BF02870400