期刊论文

Numerical Simulation of Flow and Mass Transfer Undergoing 2D Circular Translation for ADP Single Crystals Growth

中文

材料导报

1005-023X

2020

34

20

20022-20027

10.11896/cldb.19050015

51176208:国家自然科学基金 51476014:国家自然科学基金

本校为其他机构

本工作提出一种名为"二维圆周平动法"的新型晶体生长方法。采用有限容积法和动网格技术,对转晶法及二维圆周平动法的ADP单晶生长过程进行数值模拟。比较了两种生长方法下晶体表面时均过饱和度分布及均方差,分析了不同特征转速ω、不同圆周轨道半径R、不同晶体尺寸A对晶面时均过饱和度及均方差的影响。结果表明:与转晶法相比,二维圆周平动法晶面过饱和度及其分布均匀性得到提高。随着特征转速ω或圆周轨道半径R的增加,晶面时均过饱和度增加,均匀性变好,有利于晶面形貌的稳定。然而,随着尺寸A的增大,晶面时均过饱和度值降低,其均匀性变差。因而,随着晶体的长大,应该适当增加特征转速ω或圆周轨道半...

This paper proposed a new growth method for ammonium dihydrogen phosphate (NH4H2PO4, ADP) crystal, namely, 2D Circular Translation (2D CT). Numerical simulations had been performed on the rotating-crystal method and 2D CT by the finite volume method and dyna-mic mesh technology during the ADP single crystals growth. The distribution of time-averaged supersaturation and its standard deviation under the two methods were compared. The effects of different characteristic rotation ω, different orbit radius R and different crystal size A on the dist...