文献类型：期刊文献

中文题名：眼角膜在冻干过程中的传热传质模型

英文题名：Heat and Mass Transfer Mathematical Analysis for Cornea during Vacuum Freeze-drying

作者：邹惠芬[1];徐成海[2];苏永升[1];周邵萍[1]

机构：[1]华东理工大学机械工程学院,上海200237;[2]东北大学机械工程学院,沈阳110004

年份：2004

卷号：30

期号：1

起止页码：91

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目(59876008)

语种：中文

中文关键词：眼角膜;真空冷冻干燥;传热传质模型;有限元计算

外文关键词：cornea; vacuum freeze-drying; heat and mass transfer; finite-element computing

摘要：通过对角膜干燥过程的理论分析,建立了能真实描述角膜干燥过程传热传质的数学模型。采用ANSYS有限元计算软件对角膜的冻干过程进行模拟计算,得出如下结果:冻干室内温度约-10℃,压强维持在50Pa左右时,角膜双面冻干所需时间为170min。采用移动网格来追踪升华界面上各节点的参数值,提高了本模型的计算精度,计算结果直观可靠,物理意义明确。
Theory analysis of corneal freeze-drying, mathematical model of describing heat and mass transfer during vacuum freeze-drying of cornea was established. The analogy computation for the freeze-drying of cornea was made by using ANSYS finite-element computational software. When pressure of the freeze-drying box is about 50 Pa and temperature is about -10℃, the time of double-side drying is 170 min. In this paper, a moving-grid finite-element method was used. The sublimation interface was tracked continuously. The finite-element mesh is moved continuously such that the interface position always coincides with an element node. Computational precision is guaranteed.