采用相场方法模拟纯物质三维枝晶生长。
The phase-field method is applied to simulate dendritic growth in the three-dimensional space.
白亮带处的枝晶生长方向改变而生成弯曲的枝晶。
The dendrite growth direction is changed and dendrites are curved in the zone of white band.
在枝晶生长过程中枝晶尖端的浓度和温度的梯度最大；
The solute and temperature gradients in the tip are the highest.
研究了人为变化的不同热扩散系数对枝晶生长行为的影响。
The dependence of dendritic growth behavior on intentionally varied thermal diffusivity DT is investigated.
岩浆熔体的性质和生产工艺深刻影响着辉石枝晶生长演变。
The property of magma melt and producing technology are profoundly influence on the growth and development of pyroxene dendrite.
对枝晶生长过程作了模拟，表明枝晶生长结构具有分形特征；
The processing of dendrite growth is experimentally simulated. Result shows that the dendrite grows with fractal structure.
枝晶生长的择优取向是方向，并可实现枝晶生长的竞争机制；
The crystallographic orientation was selected preferentially, and the competition of crystal growth was developed directly in CAFE method.
多元合金的深过冷与快速枝晶生长是材料科学领域的重要研究课题。
The rapid dendrite growth of multicomponent alloys is an important research subject in the field of materials science.
研究了初始晶核半径、空间步长和各向异性对纯铝枝晶生长的影响。
The dependence of aluminum dendrite growth on the initial nucleus radius, space step and anisotropy is investigated.
凝固组织枝晶生长过程的机理和数值模拟一直是材料领域的研究热点。
Numerical simulation of dendritic growth process is one of the most interested fields in material science.
根据等轴枝晶生长过程的物理机制，改进了等轴枝晶生长的溶质扩散模型。
In the light of physical mechanism of equiaxed dendrite growth, solute diffusion models for equiaxed growth was improved.
用胞元自动机(CA)方法模拟了枝晶生长、界面扰动以及分枝的竞争演化。
Cellular automaton (CA) method was applied to simulate dendritic growth, perturbation at the interface and the branching mechanism.
枝晶是高温凝固钢液内部的主要存在方式，枝晶生长是凝固过程中的一种常见现象。
Dendrite growth is an important phenomenon during steel solidification process, which is the main existing style in the inner side of the solidifying steel.
研究了凝固潜热对过冷合金熔液中的等轴枝晶生长以及溶质场和温度场的分布的影响。
The effects of solidification latent heat on the growth of equiaxed dendrite, distribution of solute field and temperature field in undercooled liquid alloy were analyzed.
在模拟中，研究了搅动及不同的过冷度对枝晶生长形貌的影响，并对相场和浓度场作了对比和分析。
In simulation, studied the noise and different surperfluous temperature how to affect the growth of dendritic and compared phase-field figure with concentration field figure.
采用相场模型和有限差分方法，模拟了过冷纯金属熔体的枝晶生长，计算区域为二维正方形均匀网格。
Dendrite growth has been simulated with the phase field method and finite difference schemes on a two dimensional rectangular domain with a uniform square mesh.
采用相场模型和有限差分方法，模拟了过冷纯金属熔体的枝晶生长，计算区域为二维正方形均匀网格。
The dendrite growth of pure metal in undercooled melts was simulated by using phase field model(PFM) and finite difference schemes.
通过引入异质形核模型、枝晶生长模型、几率形核基底模型，借鉴单元自动生长机制，仿真了等轴晶、柱状晶组织形成的过程。
Based on the cellular automata technique, the heterogeneous nucleation model, dendrite growth model and random nucleation model are used to simulate the formation of equiaxed and columnar dendrite.
二次枝晶在冷却过程中粗化，并竞争生长。
The secondary dendrites become coarse, and grow competitively during cooling.
模型除了描述了晶粒的生长，同时还描述了枝晶臂的粗化。
The improved model not only describes grain growth, but also describes coarsening of dendrite arms.
并且随着对流强度的加大，一次枝晶间距降低，二次枝晶的生长被抑制。
Meanwhile, the primary dendrite spacing is decreased and the secondary dendrite branches are restrained.
利用传统的元胞自动机方法摸拟了基于溶质扩散控制界面生长机制的枝晶演变和显微偏析。
The dendrite evolution and micro-segregation based on mechanism of solute diffusion controlling interfacial growth is simulated by cellular automaton.
在未预热的熔覆层内，先共晶的奥氏体枝晶的生长，从界面开始逆温度梯度方向定向生长．直到熔覆层的表面。
On the non preheating cladding layer, the eutectic austenite dendrite growth is along the opposite direction of temperature gradient beginning from interface to face of cladding layer.
各向异性强度越大，枝晶尖端的生长速度越快，曲率半径越小。
Meanwhile, with rising in anisotropic value, the growth velocity of dendritic tip is promoted with decreasing in curvature radius.
各向异性强度越大，枝晶尖端的生长速度越快，曲率半径越小。
Meanwhile, with rising in anisotropic value, the growth velocity of dendritic tip is promoted with decreasing in curvature radius.
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