Phase-field simulation studies of dendrite growth coupling with force flow field

doi:10.4028/www.scientific.net/AMR.1004-1005.1069

	Phase-field simulation studies of dendrite growth coupling with force flow field
	Feng, Li 2; Zhu, Chang Sheng 2; Lu, Yang 2; Wang, Zhi Ping 1,2; An, Ling Min 2
	2014
会议日期	June 14, 2014 - June 15, 2014
会议地点	Xiamen, China
关键词	Algorithms Computer simulation Flow fields Forced convection Phase interfaces Dendrite growth Dendrite morphology Forced flows Numerical calculation Phase field methods Phase field models Phase-field simulation Simulation
卷号	1004-1005
DOI	10.4028/www.scientific.net/AMR.1004-1005.1069
页码	1069-1075
英文摘要	Coupling the force flow field with the phase field model for the isothermal growth of dendrite, Sola algorithm is used to calculate the flow speed and pressure of liquid metal, Using double grid numerical method to reduce the calculation amount of computer simulation, The space factor and time factor are introduced to improve the accuracy of double grid numerical calculation, Taking Al-2%-Cu alloy as an example, the dendrite growth process of the binary alloy under forced convection environment is simulated; The simulation results can capture the real dendrite growth and interactions of the liquid metal flow in the process of dendrite growth under forced convection environment: In the incident flow regions, the dendrite morphology is complex, the secondary dendrite is lush and the growth speed is fast due to the influence of liquid metal flow. In the back flow regions, the growth of dendrite changes the flowing pressure among the liquid metals, it causes the regional complex flow patterns and there are two opposite eddy current; the grow speed of the main branch which grows perpendicular to the initial flow direction is the fastest and presents tilt growth phenomenon. When the space coefficient value is appropriate, the dual mesh method can save calculation time effectively. © (2014) Trans Tech Publications, Switzerland.
会议录	Advanced Materials Research
会议录出版者	Trans Tech Publications Ltd
语种	英语
ISSN号	10226680
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117778]
专题	材料科学与工程学院
作者单位	1.Gansu Non-ferrous Metals and Composite Materials Engineering Technology Research Center, lanzhou, China 2.Institute of Material Science and Engineering, Lanzhou University of Technology, Lanzhou, China;
推荐引用方式 GB/T 7714	Feng, Li,Zhu, Chang Sheng,Lu, Yang,et al. Phase-field simulation studies of dendrite growth coupling with force flow field[C]. 见:. Xiamen, China. June 14, 2014 - June 15, 2014.