Experiment to study the effects of spacecraft accelerations on solutal and thermo-solutal convection

Narayanan Ramachandran

doi:10.1117/12.244339

12 July 1996 Experiment to study the effects of spacecraft accelerations on solutal and thermo-solutal convection

Narayanan Ramachandran

Proceedings Volume 2809, Space Processing of Materials; (1996) https://doi.org/10.1117/12.244339
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

An experiment to study the effects of spacecraft accelerations on solute diffusion and thermo-solutal convection is presented. The experiment focuses on two phenomena of interest to crystal growers and fluid dynamists, namely, the transport of concentration that approaches purely diffusion limited conditions in low gravity, and the effect of a temperature gradient on the developed solute profile. Ground experiments and modeling studies are discussed and a space experiment concept that can be used to test the results is presented. Optical interferometry is used to delineate the subtle effects of onboard accelerations on solute diffusion and a shadowgraph technique is utilized to discern fluid motion. The proposed experiment is a follow-up of the thermal diffusion demonstration experiment that flew as the science payload of an active vibration isolation system called STABLE on STS-73 in October 1995.

Citation Download Citation

Narayanan Ramachandran "Experiment to study the effects of spacecraft accelerations on solutal and thermo-solutal convection", Proc. SPIE 2809, Space Processing of Materials, (12 July 1996); https://doi.org/10.1117/12.244339

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