Weak convection influencing radial segregation
2001 (English)In: First International Symposium On Microgravity Research & Applications In Physical Sciences And Biotechnology, Vols I And Ii, Proceedings, European Space Agency, 2001, 431-436 p.Conference paper (Refereed)
The influence of weak convection, caused by surface tension forces, on radial segregation occuring in crystals grown under microgravity conditions is studied in a project involving both numerical simulations and space experiments. The geometry studied is a Bridgman configuration with a partially coated surface. Small slots in the coating give free surface in a controlled way, and the free surface area is the parameter in the investigation. The experiments will be performed in a GAS module, which will be flown in the beginning of year 2001. The paper presents the experimental technique in detail as well as some results obtained during the development phase. Numerical simulations have been performed and results of how the radial segregation varies with the convection level will be presented. The project is the first phase of a research program, which will continue with experiments in the ISS.
Place, publisher, year, edition, pages
European Space Agency, 2001. 431-436 p.
ESA SPECIAL PUBLICATIONS, ISSN 0379-6566 ; 454
Engineering and Technology
IdentifiersURN: urn:nbn:se:sh:diva-30395ISI: 000171226000059ScopusID: 2-s2.0-0034443212ISBN: 92-9092-657-0 (print)OAI: oai:DiVA.org:sh-30395DiVA: diva2:940076
1st International Symposium on Microgravity Research and Applications in Physical Sciences and Biotechnology, SEP 10-15, 2000, SORRENTO, ITALY