AbstractWe report the results of measurements of the critical Marangoni number MaC for the transition to time dependent flow in small floating zones (radius = length = 3.0 mm). We varied the Prandtl-Number Pr systematically in the range 18 ≤ Pr ≤ 65 by experimenting with different paraffines at different mean temperatures. A nonlinear dependence MaC (Pr) is predicted by linear stability analysis for this Pr-Number range and evidence for this was found.


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    Title :

    Prandtl-number dependence of the onset of thermocapillary flow in floating zones


    Contributors:
    Schwabe, D. (author) / Scharmann, A. (author) / Da, Xiaodong (author)

    Published in:

    Advances in Space Research ; 11 , 7 ; 233-237


    Publication date :

    1991-01-01


    Size :

    5 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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