2005
DOI: 10.1108/09615530510625138
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Three‐dimensional numerical simulation of g‐jitter induced convection and solute transport in magnetic fields

Abstract: Purpose -The quality of crystals grown in space can be diversely affected by the melt flows induced by g-jitter associated with a space vehicle. This paper presents a full three-dimensional (3D) transient finite element analysis of the complex fluid flow and heat and mass transfer phenomena in a simplified Bridgman crystal growth configuration under the influence of g-jitter perturbations and magnetic fields. Design/methodology/approach -The model development is based on the Galerkin finite element solution of… Show more

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Cited by 4 publications
(3 citation statements)
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“…Consequently, the flow intensity and its fluctuations act along the y-direction. This phenomenon was seen and discussed in previous papers [8,21].…”
Section: Itsupporting
confidence: 68%
See 1 more Smart Citation
“…Consequently, the flow intensity and its fluctuations act along the y-direction. This phenomenon was seen and discussed in previous papers [8,21].…”
Section: Itsupporting
confidence: 68%
“…The induced flow oscillated at the same frequency as the affecting g-jitter, yet with a phase angle, which could be expressed as a function of the geometry. In two additional papers [20,21], they applied the above general analysis to study the combined g-jitter and magneto hydrodynamic forces effects on the solutal striation in a simplified Bridgman-Stockbarger crystal growth system under microgravity. This study also confirmed that convection in microgravity is related to the magnitude and frequency of g-jitter and to the alignment of the gravity field with respect to the growth direction or the direction of the temperature gradient.…”
Section: Literature Reviewmentioning
confidence: 99%
“…Li et al [83] presented a full three dimensional (3D) transient finite element analysis of the complex fluid and heat and mass transfer phenomena in a simplified Bridgman crystal growth configuration under the influence of g-jitter perturbations and magnetic field to grow Ga-doped germanium single crystal in space. Numerical results and findings showed that g-jitter drives a complex, 3D, time-dependent thermal convection and that velocity spikes in response to real g-jitter disturbances in space flights, resulting in irregular solute concentration distributions.…”
Section: Bridgman Methodsmentioning
confidence: 99%