Matches in SemOpenAlex for { <https://semopenalex.org/work/W657456663> ?p ?o ?g. }
Showing items 1 to 85 of
85
with 100 items per page.
- W657456663 abstract "A great number of crystals grown in space are plagued by convective motions which contribute to structural flaws. The character of these instabilities is not well understood but is associated with density variations in the presence of residual gravity (g-jitter). As a specific example, past HgCdTe crystal growth space experiments by Lehoczky and co-workers indicate radial compositional asymmetry in the grown crystals. In the case of HgCdTe the rejected component into the melt upon solidification is HgTe which is denser than the melt. The space grown crystals indicate the presence of three dimensional flow with the heavier HgTe-rich material clearly aligned with the residual gravity (0.55-1.55 micro g) vector. This flow stems from double-diffusive convection, namely, thermal and solutal buoyancy driven flow in the melt. The study of double-diffusive convection is multi-faceted and rather vast. In our investigation, we seek to focus on one specific aspect of this discipline that is of direct relevance to materials processing especially crystal growth, namely, the side ways heating regime. This problem has been widely studied, both experimentally and numerically, in the context of solar ponds wherein the system is characterized by a linear salt (solutal) gradient with an imposed lateral temperature gradient. The induced flow instabilities arise from the wide disparity between the fluid thermal diffusivity and the solute diffusivity. The extension of the analysis to practical crystal growth applications has however not been rigorously made and understood. One subtle but important difference in crystal growth systems is the fact that die system solute gradient is non-linear (typically exponential). Besides, the crystal growth problem has the added complexities of solidification, both lateral and longitudinal thermal gradients and segregation phenomena in systems where binary and ternary compounds are being grown. This paper treats the side ways heating problem alone in a model fluid system. Results from detailed numerical calculations, mainly two dimensional are provided. The interactions between a non-linear solute gradient and an imposed transverse thermal gradient are investigated. The buoyancy effects are treated in the traditional Boussinesq approximation and also in a more complete density formulation to address recent concerns of the first approach especially in simulations of the system response in a reduced gravity environment. Detailed flow, temperature and solute field plots along with heat and mass transfer results are presented in the paper. Implications to practical crystal growth systems as discerned from the modeling results are also explored and reported." @default.
- W657456663 created "2016-06-24" @default.
- W657456663 creator A5006899387 @default.
- W657456663 creator A5031457034 @default.
- W657456663 date "1999-01-01" @default.
- W657456663 modified "2023-09-27" @default.
- W657456663 title "Double Diffusive Convection in Materials Processing" @default.
- W657456663 hasPublicationYear "1999" @default.
- W657456663 type Work @default.
- W657456663 sameAs 657456663 @default.
- W657456663 citedByCount "0" @default.
- W657456663 crossrefType "journal-article" @default.
- W657456663 hasAuthorship W657456663A5006899387 @default.
- W657456663 hasAuthorship W657456663A5031457034 @default.
- W657456663 hasConcept C106836276 @default.
- W657456663 hasConcept C10899652 @default.
- W657456663 hasConcept C121332964 @default.
- W657456663 hasConcept C127313418 @default.
- W657456663 hasConcept C137109543 @default.
- W657456663 hasConcept C151730666 @default.
- W657456663 hasConcept C153294291 @default.
- W657456663 hasConcept C192562407 @default.
- W657456663 hasConcept C199360897 @default.
- W657456663 hasConcept C204530211 @default.
- W657456663 hasConcept C26456737 @default.
- W657456663 hasConcept C2779343474 @default.
- W657456663 hasConcept C2779891131 @default.
- W657456663 hasConcept C2781285689 @default.
- W657456663 hasConcept C37668627 @default.
- W657456663 hasConcept C38349280 @default.
- W657456663 hasConcept C41008148 @default.
- W657456663 hasConcept C41231900 @default.
- W657456663 hasConcept C538625479 @default.
- W657456663 hasConcept C54791560 @default.
- W657456663 hasConcept C57879066 @default.
- W657456663 hasConcept C97355855 @default.
- W657456663 hasConceptScore W657456663C106836276 @default.
- W657456663 hasConceptScore W657456663C10899652 @default.
- W657456663 hasConceptScore W657456663C121332964 @default.
- W657456663 hasConceptScore W657456663C127313418 @default.
- W657456663 hasConceptScore W657456663C137109543 @default.
- W657456663 hasConceptScore W657456663C151730666 @default.
- W657456663 hasConceptScore W657456663C153294291 @default.
- W657456663 hasConceptScore W657456663C192562407 @default.
- W657456663 hasConceptScore W657456663C199360897 @default.
- W657456663 hasConceptScore W657456663C204530211 @default.
- W657456663 hasConceptScore W657456663C26456737 @default.
- W657456663 hasConceptScore W657456663C2779343474 @default.
- W657456663 hasConceptScore W657456663C2779891131 @default.
- W657456663 hasConceptScore W657456663C2781285689 @default.
- W657456663 hasConceptScore W657456663C37668627 @default.
- W657456663 hasConceptScore W657456663C38349280 @default.
- W657456663 hasConceptScore W657456663C41008148 @default.
- W657456663 hasConceptScore W657456663C41231900 @default.
- W657456663 hasConceptScore W657456663C538625479 @default.
- W657456663 hasConceptScore W657456663C54791560 @default.
- W657456663 hasConceptScore W657456663C57879066 @default.
- W657456663 hasConceptScore W657456663C97355855 @default.
- W657456663 hasLocation W6574566631 @default.
- W657456663 hasOpenAccess W657456663 @default.
- W657456663 hasPrimaryLocation W6574566631 @default.
- W657456663 hasRelatedWork W1484395753 @default.
- W657456663 hasRelatedWork W1505956544 @default.
- W657456663 hasRelatedWork W1511209640 @default.
- W657456663 hasRelatedWork W1622352172 @default.
- W657456663 hasRelatedWork W1665537619 @default.
- W657456663 hasRelatedWork W1974472968 @default.
- W657456663 hasRelatedWork W1995791436 @default.
- W657456663 hasRelatedWork W2007393891 @default.
- W657456663 hasRelatedWork W2008167831 @default.
- W657456663 hasRelatedWork W2044088030 @default.
- W657456663 hasRelatedWork W2047859796 @default.
- W657456663 hasRelatedWork W2066586400 @default.
- W657456663 hasRelatedWork W2077939415 @default.
- W657456663 hasRelatedWork W258497178 @default.
- W657456663 hasRelatedWork W2901658457 @default.
- W657456663 hasRelatedWork W300804824 @default.
- W657456663 hasRelatedWork W3173213844 @default.
- W657456663 hasRelatedWork W846900812 @default.
- W657456663 hasRelatedWork W85377442 @default.
- W657456663 hasRelatedWork W895833992 @default.
- W657456663 isParatext "false" @default.
- W657456663 isRetracted "false" @default.
- W657456663 magId "657456663" @default.
- W657456663 workType "article" @default.