Phase-field simulation dendritic growth under forced convection with hypergravity

doi:10.1088/1674-1056/ade068

中国物理B ›› 2025, Vol. 34 ›› Issue (10): 108102-108102.doi: 10.1088/1674-1056/ade068

Phase-field simulation dendritic growth under forced convection with hypergravity

Jianjing Zheng(郑建靖)^1,2,†, Xuanxuan Zhou(周旋旋)^1,2, Daosheng Ling(凌道盛)^1,2, and Kunming Song(宋坤明)^1,2

1 Institute of Hypergravity Science and Technology, Zhejiang University, Hangzhou 310058, China;
2 Key Laboratory of Soft Soils and Geoenvironmental Engineering (Ministry of Education), Zhejiang University, Hangzhou 310058, China

收稿日期:2025-03-16 修回日期:2025-05-10 接受日期:2025-06-04 发布日期:2025-09-29
通讯作者: Jianjing Zheng E-mail:zhengjianjing@zju.edu.cn
基金资助:
This work was supported by the National Natural Science Foundation of China (Grant No. 52588202).

Phase-field simulation dendritic growth under forced convection with hypergravity

Jianjing Zheng(郑建靖)^1,2,†, Xuanxuan Zhou(周旋旋)^1,2, Daosheng Ling(凌道盛)^1,2, and Kunming Song(宋坤明)^1,2

1 Institute of Hypergravity Science and Technology, Zhejiang University, Hangzhou 310058, China;
2 Key Laboratory of Soft Soils and Geoenvironmental Engineering (Ministry of Education), Zhejiang University, Hangzhou 310058, China

Received:2025-03-16 Revised:2025-05-10 Accepted:2025-06-04 Published:2025-09-29
Contact: Jianjing Zheng E-mail:zhengjianjing@zju.edu.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (Grant No. 52588202).

摘要/Abstract

摘要： The phase-field method is used to study the free dendritic crystal growth under forced convection with hypergravity, the hypergravity term is introduced into the liquid-phase momentum equation to examine the dendritic growth. The paper focuses on the morphology of dendrite growth as well as the tip radius of the upstream dendritic arm and the average growth velocity of dendrite tips under different hypergravity levels. The results show that the morphology of dendrite changes significantly under represent simulation conditions when the hypergravity reaches $35\bm g_0$, the upstream dendritic arm will bifurcate and the horizontal dendrite arms gradually tilt upwards. This change is mainly caused by the hypergravity and flow changing the temperature field near the dendrite interface. In addition, before the morphology of the dendrite is significantly altered, the radius of the tip of the dendrite upstream arm becomes larger with the increase in hypergravity, and the average growth velocity will increase linearly with it. The morphology of dendritic growth under different hypergravity and the changes in the tip radius along with the average growth velocity of the upstream dendritic tip with hypergravity are given in this paper. Finally, the reasons for these phenomena are analyzed.

关键词: hypergravity, dendrite growth, phase-field simulation, forced convection

Abstract: The phase-field method is used to study the free dendritic crystal growth under forced convection with hypergravity, the hypergravity term is introduced into the liquid-phase momentum equation to examine the dendritic growth. The paper focuses on the morphology of dendrite growth as well as the tip radius of the upstream dendritic arm and the average growth velocity of dendrite tips under different hypergravity levels. The results show that the morphology of dendrite changes significantly under represent simulation conditions when the hypergravity reaches $35\bm g_0$, the upstream dendritic arm will bifurcate and the horizontal dendrite arms gradually tilt upwards. This change is mainly caused by the hypergravity and flow changing the temperature field near the dendrite interface. In addition, before the morphology of the dendrite is significantly altered, the radius of the tip of the dendrite upstream arm becomes larger with the increase in hypergravity, and the average growth velocity will increase linearly with it. The morphology of dendritic growth under different hypergravity and the changes in the tip radius along with the average growth velocity of the upstream dendritic tip with hypergravity are given in this paper. Finally, the reasons for these phenomena are analyzed.

Key words: hypergravity, dendrite growth, phase-field simulation, forced convection

中图分类号: (Theory and models of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)

81.10.Aj

Jianjing Zheng(郑建靖), Xuanxuan Zhou(周旋旋), Daosheng Ling(凌道盛), and Kunming Song(宋坤明). Phase-field simulation dendritic growth under forced convection with hypergravity[J]. 中国物理B, 2025, 34(10): 108102-108102.

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Phase-field simulation dendritic growth under forced convection with hypergravity

Phase-field simulation dendritic growth under forced convection with hypergravity

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