基于相场方法对纯物质的凝固过程进行了二维数值模拟.以氙为例,展示了界面形貌的演化过程,研究了相场参数对枝晶界面形貌的影响.结果表明,随着过冷度值的增加,晶核由一圆核逐渐发展为发达的枝晶,相应的枝晶稳态尖端速度明显加快;随着耦合系数的增大,晶核由一圆核发展为细长的枝晶,枝晶的稳态尖端速度呈单调递增趋势,界面的稳定性逐渐变差.
参考文献
| [1] | Giummarre C;Lacombe J C;Koss M B et al.[J].Journal of Crystal Growth,2005,274:317-330. |
| [2] | Lan CW .Recent progress of crystal growth modeling and growth control[J].Chemical Engineering Science,2004(7):1437-1457. |
| [3] | Beckermann C;Diepers H J;Steinbach Y L et al.[J].Journal of Computational Physics,1999,154:468-496. |
| [4] | Nestler B;Danilov D;Galenko P .[J].Journal of Computational Physics,2005,207:221-239. |
| [5] | Ocak Y;Akbujut S;Boyuk U;Erol A;Keslioglu K;Marasli N .Solid-liquid interfacial energy for solid succinonitrile in equilibrium with succinonitrile dichlorobenzene eutectic liquid[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2006(1):86-91. |
| [6] | Karma A;Rappel W J .[J].Physical Review E,1996,53(04):R3017-R3020. |
| [7] | Karma A;Rappel W J .[J].Physical Review E,1998,57(04):4323-4349. |
| [8] | Singer HM;Singer-Loginova I;Bilgram JH;Amberg G .Morphology diagram of thermal dendritic solidification by means of phase-field models in two and three dimensions[J].Journal of Crystal Growth,2006(1):58-68. |
| [9] | Mathis P .[J].Journal of Crystal Growth,2007,303:49-57. |
| [10] | Ramirez J C;Beckermann C;Karma A et al.[J].Physical Review E,2004,69:051607-051-16. |
| [11] | Eggleston J J;Mcfadden G B;Voorhees P W .[J].Physical Review D,2001,150:91-103. |
| [12] | Kim S G;Kim W T .[J].Journal of Crystal Growth,2005,275:e355-e360. |
| [13] | 李俊杰,王锦程,杨根仓.相场法模拟界面能各向异性对枝晶生长行为的影响[J].自然科学進展,2005(11):1312-1317. |
| [14] | Voorhees P W;Coriell S R;Mcfadden G B .[J].Journal of Crystal Growth,1984,67:425-440. |
| [15] | Udaykumar H S;Marella S;Krishnan S .[J].International Journal of Heat and Mass Transfer,2003,46:2615-2627. |
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