Optical Diagnostic and Modeling the Solution Growth Process of NaClO3 Crystals
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摘要: 运用光学干涉诊断方法实时观测NaClO3晶体生长过程,得到晶体生长过程中溶液浓度,晶体尺寸等物理参量.将这些参量与数值模拟得到的结果进行比对,研究重力条件下NaClO3晶体溶液生长过程中速度场、浓度场的分布与演化,尝试提出符合实际情况的晶体生长理论模型.对比两种方法得到的浓度边界层厚度,数值模拟得到了与实验数据相一致的结论.Abstract: Both a real time optical interferometric experiment and a numerical simulation of two-dimension non-steady state model were employed to study the growth process of aqueous NaClO3 crystals. The parameters such as solution concentration distribution, crystal dimensions, growth rate and velocity field were obtained by both experiment and numerical simulation. The influence of earth gravity during crystal growth process was analyzed. A reasonable theory model corresponding to the present experiment is advanced. The thickness of concentration boundary layer was investigated especially. The results from the experiment and numerical simulation match well.
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Key words:
- crystal growth /
- interferometry /
- numerical simulation /
- concentration boundary layer
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[1] Onuma K,Tsukamoto K,Sunagawa I.Role of buoyancy driven convection in aqueous solution growth: a case study of (BaNO3)2 crystal[J].J Crystal Growth,1988,89(2/3):177—188. doi: 10.1016/0022-0248(88)90401-0 [2] Onuma K,Kameyama T,Tsukamoto K.In situ study of surface phenomena by real time phase shift interferometry[J] .J Crystal Growth,1994,137(3/4):610—622. doi: 10.1016/0022-0248(94)91006-5 [3] Duan L,Kang Q,Hu W R,et al.The mass transfer process and the growth rate of protein crystals[J].Biophysical Chemistry,2002,97(2/3):189—201. doi: 10.1016/S0301-4622(02)00067-4 [4] Duan L,Shu J Z.The convection during NaClO3 crystal growth observed by the phase shift interferometer[J].J Crystal Growth,2001,223(1/2):181—188. doi: 10.1016/S0022-0248(00)01031-9 [5] 段俐,康琦,束继祖.微小晶体生长过程的光学诊断实验研究[J].力学学报,2002,34(3):463—467. [6] 胡文瑞,徐硕昌.微重力流体力学[M].北京:科学出版社,1999. [7] Nadarjah Arunan,Rosenberger Franz,Alexander J Iwan D.Modelling the solution growth of TGS crystals in low gravity[J].J Crystal Growth,1990,104(2):218—232. doi: 10.1016/0022-0248(90)90121-Z [8] Vekilov Peter G,Alexander J Iwan D,Rosenberger Franz.Nonlinear response of layer growth dynamics in the mixed kinetics-bulk-transport regime[J].Phys Rev E,1996,54(6):6650—6660. doi: 10.1103/PhysRevE.54.6650 [9] Vekilov Peter G,Lin Hong,Rosenberger Franz.Unsteady crystal growth due to step-bunch cascading[J].Phys Rev E,1997,55(3):3202—3214. doi: 10.1103/PhysRevE.55.3202 [10] Allégre Claude J,Provost Ariel,Jaupart Claude.Oscillatory zoning: a pathological case of crystal growth[J].Nature,1981,294(5838):223—228. doi: 10.1038/294223a0 [11] Kang Q,Duan L,Hu W R.Mass transfer process during the NaClO3 crystal growth process[J].Internat J Heat Mass Transfer,2001,44(17):3213—3222. doi: 10.1016/S0017-9310(00)00353-7 [12] 张克从,张乐德.晶体生长科学与技术(第二版)[M].北京:科学出版社,1997,5.
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