NUMERICAL SIMULATION OF SUCCINONITRITE DENDRITIC GROWTH IN A FORCED FLOW

金属学报(英文版), 2008, 21(6): 444-450.

^1, , ^2, , ^3,

1.School of Science, Department of Applied Physics, Shaanxi Key Laboratory of Condensed Matter Structures and Properties, Northwestern Polytechnical University, Xi'an 710072, China

2.School of Science, Department of Applied Physics, Shaanxi Key Laboratory of Condensed Matter Structures and Properties, Northwestern Polytechnical University, Xi'an 710072, China

3.School of Science, Xi'an University of Science & Technology, Xi'an 710054,China

基金项目: Major Program of the National Natural Science Foun-dation of China(50331040;60171034)

NUMERICAL SIMULATION OF SUCCINONITRITE DENDRITIC GROWTH IN A FORCED FLOW

Z. Chen ^1, , C.L. Chen ^2, , L.M. Hao ^3,

1.School of Science, Department of Applied Physics, Shaanxi Key Laboratory of Condensed Matter Structures and Properties, Northwestern Polytechnical University, Xi'an 710072, China

2.School of Science, Department of Applied Physics, Shaanxi Key Laboratory of Condensed Matter Structures and Properties, Northwestern Polytechnical University, Xi'an 710072, China

3.School of Science, Xi'an University of Science & Technology, Xi'an 710054,China

Keywords： Phase field method

Numerical simulation based on phase field method is performed to describe solidifica-tion process of pure material in a free or forced flow. The evolution of the interface is showed, and the effects of mesh grid and flow velocity on succinonitrite shape are studied. These results indicate that crystal grows into an equiaxial dendrite in a free flow and into an asymmetrical dendritic in a forced flow. With increasing flow velo-city, the upstream dendritic arm tip grows faster and the downstream arm grows slower. However, the evolution of the perpendicular tip has no significant change. In addition, mesh grid has no influence on dendritic growth shape when mesh grid is above 300×300.

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NUMERICAL SIMULATION OF SUCCINONITRITE DENDRITIC GROWTH IN A FORCED FLOW

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