Journal ArticleDOI
Analysis of periodic non-rotational W striations in Mo single crystals due to nonsteady thermocapillary convection
M. Jurisch,W. Löser +1 more
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TLDR
In this paper, the origin of strictly periodic, non-rotational W striations in Mo single crystals grown by electron beam float-zoning was investigated through a systematic variation of crystal growth parameters, the periodic striations were shown to be due to the transition of the thermocapillary flow from a steady to a single-mode oscillatory state.About:
This article is published in Journal of Crystal Growth.The article was published on 1990-04-02. It has received 51 citations till now. The article focuses on the topics: Marangoni effect & Marangoni number.read more
Citations
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Floating-zone and floating-solution-zone growth of GaSb under microgravity
TL;DR: In this paper, the critical Marangoni number for the onset of time-dependent thermocapillary convection for the FZ growth was determined: Ma c2 =375±125.
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Control of thermocapillary convection in a liquid bridge by vibration
TL;DR: In this article, the surface streaming induced in a short vertical liquid column by the vibration of one of the supporting end walls has been utilized to balance an opposing steady thermocapillary flow in a model half-zone of silicone oil.
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Weakly nonlinear oscillations of nearly inviscid axisymmetric liquid bridges
José A. Nicolás,José M. Vega +1 more
TL;DR: In this article, a weakly nonlinear analysis of the small oscillations of nearly inviscid liquid bridges subjected to almost resonant axial vibrations of the disks is presented, and an amplitude equation is derived for the evolution of the complex amplitude of the oscillations that exhibits hysteresis and period doublings.
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On the steady streaming flow due to high-frequency vibration in nearly inviscid liquid bridges
TL;DR: In this article, the steady streaming flow due to vibration in capillary bridges is considered in the limiting case when both the capillary Reynolds number and the non-dimensional vibration frequency are large.
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Long-wave Marangoni instability with vibration
TL;DR: In this paper, the effect of vertical vibration on the long-wave instability of a Marangoni system is studied and the vibration augments the stabilizing effect of surface tension in bounded systems.
References
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Journal ArticleDOI
Instabilities of dynamic thermocapillary liquid layers. I Convective instabilities
Marc K. Smith,Stephen H. Davis +1 more
TL;DR: In this paper, a steady shear flow is set up in a planar liquid layer bounded below by a rigid plate, and above by an interface with a passive gas, by imposing a temperature gradient along the layer and driving the motion by thermocapillarity.
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Steady and oscillatory thermocapillary convection in liquid columns with free cylindrical surface
TL;DR: In this paper, the effect of the phase velocity of the running disturbance on the aspect ratio of the column was investigated and a unique non-dimensional wavenumber ≈ 2·2 (near Mac) of the distortion was found.
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Some evidence for the existence and magnitude of a critical marangoni number for the onset of oscillatory flow in crystal growth melts
Daniel Schwabe,A. Scharmann +1 more
TL;DR: In this article, the state of oscillatory Marangoni convection in crystal growth from melt is described and the dependence of the number of oscillations on the zone length is investigated.
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Oscillatory thermocapillary convection in a simulated floating-zone configuration
TL;DR: In this article, a drop of liquid is suspended vertically between two small circular rods which are maintained at different temperatures, and the onset of oscillations, free surface temperature distributions and flow structure are investigated.
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Inhomogeneities due to thermocapillary flow in floating zone melting
Chong E. Chang,William R. Wilcox +1 more
TL;DR: Theoretical calculations have shown that radial inhomogeneities are produced by thermocapillary flow at low driving forces unless the zone travel rate is very low or the distribution coefficient is near unity as discussed by the authors.