Quantitative comparison of dendritic growth under forced flow between 2D and 3D phase-field simulation

doi:10.1016/j.ijheatmasstransfer.2019.01.104

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	Quantitative comparison of dendritic growth under forced flow between 2D and 3D phase-field simulation
	Gong, Tong Zhao 1,2; Chen, Yun 2; Li, Dian Zhong 2; Cao, Yan Fei 2; Fu, Pai Xian 2
刊名	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
	2019-06-01
卷号	135 页码:262-273
关键词	Phase-field Dendritic growth Alloy Solidification Forced flow
ISSN号	0017-9310
DOI	10.1016/j.ijheatmasstransfer.2019.01.104
通讯作者	Chen, Yun(chenyun@imr.ac.cn)
英文摘要	Due to distinctions of the heat and mass transport in two (2D) and three (3D) dimensions, the morphology and growth of numerically simulated dendrites are usually different. In order to quantitatively address such differences, the free dendritic growth of a binary alloy from undercooled melt under forced flow is simulated using the phase-field (PF) method. The vector-valued approach has been employed to solve the equations of fluid dynamics to expedite simulations. The classical Ananth-Gill solutions are used to validate the results of PF simulations, and good agreements between the simulated growth Peclet numbers of the upstream tip and analytical predictions are achieved. The tip velocity and radius of the steady-state upstream tip, and the solute profile ahead of the tip solid-liquid (S-L) interface, are compared quantitatively between 2D and 3D simulations. In 3D, since the rejected solute can be rapidly transported away from the S-L interface by liquid flow, the solute concentration at the liquid side of the S-L interface is lower, but its gradient is higher, and the thickness of the solute boundary layer is smaller, thus leading to a higher tip velocity and smaller tip radius. However, the ratios of the tip velocity and tip radius between 2D and 3D are not confined in a certain range but varies with the supersaturation and liquid inflow velocity. Nevertheless, the differences are relieved with increasing the supersaturation or the inflow strength. Quantitative distinctions can be found from the ratios of these characteristics and the tip stability parameter in 2D versus 3D simulations, which follow a power law of supersaturation or growth Peclet number. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	Science Challenge Project[TZ2016004] ; National Natural Science Foundation of China[51701225] ; National Natural Science Foundation of China[U1508215]
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000464488200024
资助机构	Science Challenge Project ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/132852]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen, Yun
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Gong, Tong Zhao,Chen, Yun,Li, Dian Zhong,et al. Quantitative comparison of dendritic growth under forced flow between 2D and 3D phase-field simulation[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2019,135:262-273.
APA	Gong, Tong Zhao,Chen, Yun,Li, Dian Zhong,Cao, Yan Fei,&Fu, Pai Xian.(2019).Quantitative comparison of dendritic growth under forced flow between 2D and 3D phase-field simulation.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,135,262-273.
MLA	Gong, Tong Zhao,et al."Quantitative comparison of dendritic growth under forced flow between 2D and 3D phase-field simulation".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 135(2019):262-273.