科研之友
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摘要
A mathematical model that considers both microheat and mass transfer and macrotransport phenomena is presented to investigate the unidirectional solidification of a binary NH4Cl-H2O solution. It is shown that the solidus and liquidus locations predicted by the numerical coupling calculation are close to the experimental data. The variation of solute concentration approaches the Scheil equation. The mushy zone has good permeability and makes way for double diffusive flow. The deviation of numerical results of new phase growth from experimental data is probably caused by the inadequate estimation of permeability and microfluid flow in the mushy layer.
- 出版日期2009
- 单位北京科技大学
