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瓶装物料的冷冻干燥是现今冷冻干燥生产的主要形式之一 .基于目前对瓶侧面传热的二维冷冻干燥理论的研究还不成熟 ,本文提出了一个考虑因素较为全面的二维数学模型 .根据模型方程的特点把二循环对称分裂格式、预测 -校正格式等算法联立起来对模型进行了数值求解 .结果表明 ,计算值与以脱脂牛奶为物料的冷冻干燥实验结果吻合良好
The freeze-drying of bottle material is one of the main forms of freeze-drying production today.Based on the current research on the two-dimensional freeze-drying theory of bottle heat transfer is not yet mature, a two-dimensional mathematical model with more comprehensive consideration is proposed in this paper.According to The characteristics of the model equations are solved numerically by solving the two-loop symmetrical splitting scheme, the prediction-correction scheme, etc. The results show that the calculated values are in good agreement with the freeze-dried results of skim milk