液状制品冻干中升华问题的VTS有限差分解  

VTS Finite-difference Solution of A Fick's Sublimation Problem of Liquid Product during Vacuum Freeze-drying

作　　者：许淑惠[1] 周明连 赵月罗[1] 齐锡龄[2] 

机构地区：[1]河北建筑科技学院,邯郸056038 [2]天津大学,天津300072

出　　处：《真空科学与技术》1998年第4期276-282,共7页Vacuum Science and Technology

摘　　要：用变时间步长有限差分法对液状多孔制品在真空冷冻干燥过程中的Fick分子扩散传质时的升华问题进行了求解，理论和实验结果比较表明，变时间步长有限差分解简单、直观，具有较高的准确性。The heat and mass transfer of a porous liquid product during vacuum freeze-drying was studied using variable time step finite-difference calculation. The validity of the model and the calculation was confirmed by experiments.

关 键 词：真空冷冻干燥 有限差分 升华 VTS 液状 生物制品 

分 类 号：Q－33[生物学]