高温KNbO_3熔液内速度场和温度场的实验研究及其数字模拟分析  

Experiment and Numerical Simulation of Velocity and Temperature Fields in KNbO_3 Solution

作　　者：刘照华[1] 金蔚青[1] 潘志雷[1] 梁歆桉[1] 陈刚毅[1] 

机构地区：[1]中国科学院上海硅酸盐研究所,上海200050

出　　处：《无机材料学报》2002年第6期1112-1116,共5页Journal of Inorganic Materials

基　　金："九五"攀登计划(攀95-预-34);国家自然科学基金(59832080)

摘　　要：在重力对流作用的情况下,本文对实验所用的铂金坩埚中的高温熔液内的速度分布和温度分布进行了数字模拟研究,结果表明:借助实验边界条件和Boussinesq近似,铌酸钾高温熔液中的速度分布及温度分布的数字模拟结果与实验结果基本吻合,流体运动的轨迹与实验示踪粒子轨迹也基本一致.Velocity field and temperature field in the high temperature solution in a loop-like Pt crucible were simulated numerically by using the commercial computational code under gravity conditions. The results indicate that, based on the experimental boundary conditions and the Boussinesq approximation, velocity field and temperature field with the numerical simulation basically agree with the experimental data, meantime, the fluid flow trace is also similar to the phenomena observed with the traced particles of Na2CO3 in the high temperature oxide solution.

关 键 词：高温KNbO3熔液 实验研究 数字模拟 速度场 温度场 铌酸钾 晶体生长 

分 类 号：O78[理学—晶体学]