以粒状马铃薯为研究对象,在常压吸附流化床冷冻干燥的实验基础上,建立了吸附流化床内对流边界条件下的球坐标冻干模型,并采用变时间步长的有限差分法,求解了物料内部温度分布及升华界面的移动速率,与实验结果吻合较好,分析了有关因素对于冻干过程中传热及干燥过程的影响.
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