二维圆周平动法ADP单晶生长流动与传质数值模拟

doi:10.11896/cldb.19050015

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Abstract 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 distribution of time-averaged supersaturation and its standard deviation were analyzed. The results indicate that comparing with the rotating crystal met-hod, the 2D CT has advantages in terms of the surface supersaturation and its distribution homogeneity. With the increase of the characteristic rotation ω and the orbit radius R, the time-averaged supersaturation on the crystal faces increases and its homogeneity becomes better, which is beneficial to the stability of the surface morphology. However, as the size A gets larger, the time-averaged supersaturation decreases and its uniformity becomes worse. As a consequence, it is necessary to increase the characteristic rotation ω or the orbit radius R during the crystal growth.

Key words： flow and mass transfer ADP single crystals 2D circular translation solution-based crystal growth method numerical simulations

Published: 06 November 2020

CLC number:

O781

Fund:National Natural Science Foundation of China (51176208, 51476014).

About author:: Hang Liu, the doctor graduate student in the School of Energy and Power Engineering at Chongqing University, mainly focusing on the numerical simulation of crystal growth by solution method.
Mingwei Lireceived his Ph. D degree from Chongqing University in 1995. Since that time he has being wor-king in School of Energy and Power Engineering of Chongqing University. His research interest is concentrated on some thermophysical problems in the preparation of materials.

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	LIU Hang
	LI Mingwei
	WANG Pengfei
	HU Zhitao
	YIN Huawei

Cite this article:

LIU Hang,LI Mingwei,WANG Pengfei, et al. Numerical Simulation of Flow and Mass Transfer Undergoing 2D Circular Translation for ADP Single Crystals Growth[J]. Materials Reports, 2020, 34(20): 20022-20027.

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http://www.mater-rep.com/EN/10.11896/cldb.19050015 OR http://www.mater-rep.com/EN/Y2020/V34/I20/20022

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