| 薄层介质干燥过程内部水分扩散 |
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| 引用本文： | 肖美添,朱艳,刘华信.薄层介质干燥过程内部水分扩散[J].华侨大学学报(自然科学版),2003,24(2):184-188. |
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| 作者姓名： | 肖美添 朱艳 刘华信 |
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| 作者单位： | 华侨大学材料科学与工程学院,福建,泉州,362011 |
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| 摘 要： | 以海带作为薄层介质的试样，进行对流干燥实验．根据单项指数模型，计算干燥过程中介质内部水分的有效扩散系数．建立物料内水分扩散微分方程及边界条件，用有限差分法进行数值求解，模拟计算结果与实验结果相吻合．研究结果有利于深入分析和理解物科的干燥特性，以及其在一定条件下的脱水能力．
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| 关 键 词： | 海带 薄层介质 干燥过程 水分扩散 有效扩散系数 有限差分法 脱水能力 |
| 文章编号： | 1000-5013(2003)02-0184-05 |
| 修稿时间： | 2002年12月23 |
Moisture Diffusion from Thin Layer Media during Drying Process |
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| Xiao Meitian,Zhu Yan,Liu Huaxin.Moisture Diffusion from Thin Layer Media during Drying Process[J].Journal of Huaqiao University(Natural Science),2003,24(2):184-188. |
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| Authors: | Xiao Meitian Zhu Yan Liu Huaxin |
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| Abstract: | Taking laminaria japonica as the sample of thin layer media, experiment of drying by convection is carried out. Effective diffusion coefficient of moisture inside the media during drying process is calculated according to single exponential model. Differential equation and boundary condition of diffusion of moisture of matter are established and solved numerically by the method of finite difference. The results of analog calculation coincide with results of experiment. These results are advantageous to the deepgoing analysis and understanding of the characteristic of drying of matter and water separation capability under certain condition. |
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| Keywords: | thin layer media drying moisture diffusion coefficient diffusion model |
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