摘要
聚合物结晶已有的相场模型中包含了许多缺乏实际物理意义的参数,通过调整参数的取值虽然可以得到与实验相一致的结果,但与实验结果的条件无法对应。建立了新的相场模型,不需要调整界面厚度、噪声、模型等缺乏物理意义的参数取值,仅通过调整潜热就可以模拟出等规聚苯乙烯结晶的各种形态,如:枝晶、球晶、片晶等。使用有限差分法对该模型进行了求解,再使用Tecplot软件对数据可视化,得到了与实验相一致的结果。
The existing phase field model of polymer crystallization contains many parameters that lack practical physical meaning.Although the values of the parameters can be adjusted to obtain consistent results with the experimental results,the conditions cannot correspond to the experimental results.In this paper,a new phase field model is established.There is no need to adjust the interface thickness,noise,model and other parameters that lacks physical meaning.Only by adjusting the latent heat,various forms of isotactic polystyrene crystals such a dendrite,spherulites,lamellas,etc.,can be simulated.The finite difference method was used to solve the model,and then the data was visualized using Tecplot software,and the results consistent with the experiment were obtained.
作者
王志凤
杨斌鑫
WANG Zhi-feng;YANG Bin-xin(School of Applied Science,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《太原科技大学学报》
2023年第1期74-78,共5页
Journal of Taiyuan University of Science and Technology
基金
国家自然科学基金(11701406)。
关键词
相场模型
潜热
有限差分法
聚合物
数值模拟
phase field model
latent heat
finite difference method
polymer
numerical simulation
