Growth constants in solidification / Saurabh Agrawal in Industrial & engineering chemistry research, Vol. 47 n°15 (Août 2008)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 47 n°15 (Août 2008) . - p. 5087-5091 Titre : Growth constants in solidification Type de document : texte imprimé Auteurs : Saurabh Agrawal, Auteur ; Lewis E. Johns, Auteur ; Ranga Narayanan, Auteur Année de publication : 2008 Article en page(s) : p. 5087-5091 Note générale : Bibliogr. p. 5091 Langues : Anglais (eng) Mots-clés : Solidification  Growth rates  Bulk phase Résumé : In phase-change problems, there are domain and surface contributions to the dynamics of a moving front. It is ordinarily assumed that the surface contributions are in complete control. This is likely to be true in the case of planar fronts, but it may or may not be true in the cylindrical case. We study the growth rates of disturbances imposed on the surface of a cylindrical solid in equilibrium with its melt and deduce the conditions under which time derivatives of bulk-phase variables are important. They are important in the case of a whisker and are even more important if a solute is added. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie070838w [article] Growth constants in solidification [texte imprimé] / Saurabh Agrawal, Auteur ; Lewis E. Johns, Auteur ; Ranga Narayanan, Auteur . - 2008 . - p. 5087-5091. Bibliogr. p. 5091 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°15 (Août 2008) . - p. 5087-5091 Mots-clés : Solidification  Growth rates  Bulk phase Résumé : In phase-change problems, there are domain and surface contributions to the dynamics of a moving front. It is ordinarily assumed that the surface contributions are in complete control. This is likely to be true in the case of planar fronts, but it may or may not be true in the cylindrical case. We study the growth rates of disturbances imposed on the surface of a cylindrical solid in equilibrium with its melt and deduce the conditions under which time derivatives of bulk-phase variables are important. They are important in the case of a whisker and are even more important if a solute is added. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie070838w

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Stabilizing the interface in the rayleigh – taylor and the saffman – taylor problems by heating / Kamuran E. Uguz in Industrial & engineering chemistry research, Vol. 50 N° 23 (Décembre 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13250-13257 Titre : Stabilizing the interface in the rayleigh – taylor and the saffman – taylor problems by heating Type de document : texte imprimé Auteurs : Kamuran E. Uguz, Auteur ; Lewis E. Johns, Auteur ; Ranga Narayanan, Auteur Année de publication : 2012 Article en page(s) : pp. 13250-13257 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Heating Résumé : We can stabilize the Rayleigh―Taylor instability to perturbations of any wavelength by heating from above. The same is true for the Saffinan―Taylor instability. We present formulas for estimating the temperature difference required to do this and find that more reasonable temperature differences obtain in the Saffman―Taylor problem because the temperature dependence of the viscosity is much stronger than the temperature dependence of the density. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267481 [article] Stabilizing the interface in the rayleigh – taylor and the saffman – taylor problems by heating [texte imprimé] / Kamuran E. Uguz, Auteur ; Lewis E. Johns, Auteur ; Ranga Narayanan, Auteur . - 2012 . - pp. 13250-13257. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13250-13257 Mots-clés : Heating Résumé : We can stabilize the Rayleigh―Taylor instability to perturbations of any wavelength by heating from above. The same is true for the Saffinan―Taylor instability. We present formulas for estimating the temperature difference required to do this and find that more reasonable temperature differences obtain in the Saffman―Taylor problem because the temperature dependence of the viscosity is much stronger than the temperature dependence of the density. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267481

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