Chakraborty, S. ; Dutta, P. (2003) Three-dimensional double-diffusive convection and macrosegregation during non-equilibrium solidification of binary mixtures International Journal of Heat and Mass Transfer, 46 (12). pp. 2115-2134. ISSN 0017-9310
Full text not available from this repository.
Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0017-9310(02)00530-6
Abstract
A three-dimensional transient mathematical model (following a fixed-grid enthalpy-based continuum formulation) is used to study the interaction of double-diffusive natural convection and non-equilibrium solidification of a binary mixture in a cubic enclosure cooled from a side. Investigations are carried out for two separate test systems, one corresponding to a typical model "metal-alloy analogue" system and other corresponding to a real metal-alloy system. Due to stronger effects of solutal buoyancy in actual metal-alloy systems than in corresponding analogues, the convective transport mechanisms for the two cases are quite different. However, in both cases, similar elements of three-dimensionality are observed in the curvature and spacing of the projected streamlines. As a result of three-dimensional convective flow patterns, a significant solute macrosegregation is observed across the transverse sections of the cavity, which cannot be captured by two-dimensional simulations.
Item Type: | Article |
---|---|
Source: | Copyright of this article belongs to Elsevier Science. |
ID Code: | 80906 |
Deposited On: | 02 Feb 2012 09:29 |
Last Modified: | 02 Feb 2012 09:29 |
Repository Staff Only: item control page