类长圆形葡萄强制通风预冷过程的有限元法研究

食品科学 ›› 2005, Vol. 26 ›› Issue (10): 243-245.

类长圆形葡萄强制通风预冷过程的有限元法研究

杨昭, 谭晶莹, 徐晓丽

天津大学机械学院热能研究所

出版日期:2005-10-15 发布日期:2011-09-25

Study on the Pre-cooling Process with Finite Element Method

YANG Zhao, TAN Jing-Ying, XU Xiao-Li

The Energy Institute of Tianjin University

Online:2005-10-15 Published:2011-09-25

摘要/Abstract

摘要： 建立了纵剖面为类长圆形的葡萄强制通风预冷过程的传热数学模型,并用有限单元法对所建模型进行了求解,得出了预冷过程任意时刻葡萄内部的温度场及关键性参数如半冷却时间、7/8冷却时间等,并用试验结果进行了验证。结果发现,有限单元法对模型的求解能精确地对预冷过程进行预测。

关键词: 类长圆形果蔬, 强制通风预冷, 传热分析, 有限元

Abstract: A mathematical model is developed to describle the heat transfer occurring during the forced-air pre-cooling process for grapes with long-circular shape in vertical section. The governing equations are solved numerically with finite element method. The temperature field in the grapes at any time, and the cooling process key parameters such as the half cooling time and the seven-eighths cooling time are obtained. The numerical results are validated by the experiments. The cooling process results may well and truly be predicted with the mathematical model.

Key words: long-circular fruit and vegetable, forced-air pre-cooling, heat transfer analysis, finite element method

杨昭, 谭晶莹, 徐晓丽. 类长圆形葡萄强制通风预冷过程的有限元法研究[J]. 食品科学, 2005, 26(10): 243-245.

YANG Zhao, TAN Jing-Ying, XU Xiao-Li. Study on the Pre-cooling Process with Finite Element Method[J]. FOOD SCIENCE, 2005, 26(10): 243-245.

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