罐式集装箱传热过程分析及数值模拟

发布时间：2018-06-15 12:34

本文选题：罐式集装箱 + 传热过程　；参考：《华东理工大学》2012年硕士论文

【摘要】：罐式集装箱广泛运用于运输各种化工物料、农药和食品等液态物品。运输过程中物料不仅需要保温,而且很多情况下还需要加热才能完成卸料。罐箱加热保温过程是一个复杂的非稳态的传热过程。由于环境、物料参数,罐箱及加热保温结构形式的多样性,给罐箱的加热保温设计带来了很大难度。用传统手工计算无论从计算精度还是计算工作量都是难以完成的,因此采用计算机数值分析是解决这些难点的有效途径。针对一种罐箱建立传热过程的数值计算模型,并进行合理简化。通过Fluent软件对其两种蒸汽加热工况进行数值模拟,掌握流体在加热管中的流动特点,得到不同工况下每根蒸汽管中的流量、压力分布情况。研究加热过程中罐箱内部不同时刻的温度场和流场分布及变化情况,掌握加热时间的范围。数值研究不同保温层的保温性能,并针对一种保温结构对罐箱进行漏热数值分析,考察每个漏热面上不同时刻的漏热量,得出漏热分布情况和罐内温降规律。进行现场罐箱加热试验,得到了合理的试验结果,通过数据对比,考察数值分析的准确性。本文通过对罐箱传热过程的数值分析及试验研究,得到了一系列重要的参数结果,为罐式集装箱加热系统和保温结构的设计提供了依据。
[Abstract]:Tank containers are widely used to transport all kinds of chemical materials, pesticides, food and other liquid items. During transportation, not only heat preservation is required, but also heating is required to discharge the material. The heating and heat preservation process of tank box is a complicated unsteady heat transfer process. Because of the diversity of environment, material parameters, tank box and heating insulation structure, it is very difficult to design the heating and heat preservation of tank box. It is difficult to accomplish the traditional manual calculation whether from the calculation accuracy or the calculation workload. Therefore, the use of computer numerical analysis is an effective way to solve these difficulties. A numerical model of heat transfer process for a tank is established and reasonably simplified. Through the numerical simulation of two steam heating conditions by fluent software, the flow characteristics of the fluid in the heating pipe are grasped, and the flow rate and pressure distribution in each steam pipe under different working conditions are obtained. The distribution and variation of temperature field and flow field in the tank at different times during heating are studied and the range of heating time is grasped. The thermal insulation performance of different insulation layers is studied numerically, and the heat leakage of the tank is analyzed according to a kind of heat preservation structure. The heat leakage at different times on each heat leakage surface is investigated, and the heat leakage distribution and the temperature drop in the tank are obtained. The field tank heating test was carried out and reasonable test results were obtained. The accuracy of numerical analysis was investigated by comparing the data. In this paper, a series of important parameter results are obtained through numerical analysis and experimental study of the heat transfer process of the tank, which provides the basis for the design of the heating system and the insulation structure of the tank container.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH247

【引证文献】