转速对快速法生长KDP晶体影响的实验与数值模拟研究  

Experiment and numerical simulation of the influence of different rotation speeds on the rapid grown KDP crystal

作　　者：刘光霞[1] 王圣来[1] 顾庆天[1] 丁建旭[2] 朱胜军[1] 刘琳[1] 王端良[1] 景晓华[1] 李伟东[1] 黄萍萍[1] 

机构地区：[1]山东大学晶体材料研究所,济南250100 [2]山东科技大学材料科学与工程学院,山东青岛266510

出　　处：《功能材料》2014年第24期24060-24063,24069,共5页Journal of Functional Materials

基　　金：国家自然科学基金青年基金资助项目(51202131);国家自然科学基金资助项目(51321091);中国博士后基金资助项目(2013M541907)

摘　　要：采用快速生长法在不同转速下生长了KDP晶体,对晶体生长过程中的现象进行了研究;运用fluent软件,采用多重参考模型和标准k-ε湍流模型对籽晶架和晶体在溶液中旋转产生的速度场进行了数值模拟,分析了不同转速对速度场和晶体长大对溶液稳定性的影响;结合实验现象与模拟结果分析可知,初始阶段适于KDP晶体快速生长的最优转速是100 r/min,随着晶体的长大,转速应适当降低。KDP crystals were grown by the rapid growth method at different rotation speeds.The experimental phenomenon and the sizes of KDP crystals were compared for several different rotation conditions.Meanwhile, the dependence of velocity distributions on rotation speeds during KDP crystal growth process was numerical simulated by Multiple Reference Frame (MRF)and the standard k-εturbulent model.The effects of different rotation speeds on distributions of velocity and the impacts of grain growth on the solution stability were ana-lyzed.The results showed that in the initial stage the rotation speed 100 r/min was the optimum for the rapid grown KDP crystal,but as the growth of KDP crystals the rotation speeds should be reduced properly.

关 键 词：KDP晶体 数值模拟 不同转速 晶体尺寸 

分 类 号：O781[理学—晶体学]