| 摘要: |
| [目的]深入了解冷藏库预冷降温过程中的温度特性,提高冷藏库设计与管理水平.[方法]利用计算流体力学(CFD)软件Fluent,采用κ-ε紊流模型和非稳态求解方法,选择合适的边界条件,对冷藏库预冷降温过程进行二维非稳态数值计算,得到了不同时刻的温度场,并通过试验对模拟结果进行验证.[结果]模拟温度与实测温度的变化趋势一致,最大误差为3%,二者具有较好的线性拟合度,其拟合曲线的R2=0.741 2,SE=3.122 5.[结论]数值模拟能够较好地反应冷藏库预冷过程中的温度变化. |
| 关键词: 冷藏库 温度特性 数值模拟 CFD |
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| 基金项目:江苏省农机局基金项目（GXZ05016） |
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| Numerical simulation on temperature filed of a mini type cold store |
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| Abstract: |
| 【Objective】 The study was to analyze the temperature field in an empty mini type cold store during chilling process,and to improve the design and manage of cold store.【Method】 A transient two-dimensional computational fluid Dynamics(CFD) model was developed using software FLUENT.The model calculated turbulence by means of the standard sub-model with appropriate boundary condition.【Result】 After temperature field tested,it was found that the maximal error of simulated and measured temperature was 3%,and change trend was coincident,the correlation determination coefficient (R2)and standard error(SE) were 0.741 2 and 3.122 5.【Conclusion】 The model was capable of reflecting temperature change during chilling process with reasonable accuracy. |
| Key words: cold storage temperature characteristic numerical simulation CFD |
