APP  >> Vol. 8 No. 12 (December 2018)

    一维稳定热源对纯水加热温度场的模拟研究
    The Numerical Simulation of the Temperature Field When Pure Water Is Heated Using One-Dimensional Steady Heat Source

  • 全文下载: PDF(794KB)    PP.523-528   DOI: 10.12677/APP.2018.812065  
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作者:  

韩文娟,强 睿,陈 旭:六盘水师范学院电气工程学院,贵州 六盘水

关键词:
一维稳定热源温度场纯水数值模拟One-Dimensional Steady Heat Source Temperature Field Pure Water Numerical Simulation

摘要:

本文对稳定热源在一维热传导条件下加热不同质量、不同形状纯水的温度场、热通量进行数值模拟研究。研究方法:采用三维建模软件Siemens UG建立不同质量、不同几何形状圆柱和棱柱体的三维模型,利用Ansys自带的Icem划分网格,运用Ansys Heat Transfer模块对相应温度场和热通量进行数值模拟。研究结论:1) 初、终温度设定时加热同质量的各形状纯水至整体温度达到一致所经温度变化阶段相同。同质量棱柱纯水的温度场分布大致一样,其温度带呈现跃变,此类形状纯水从加热区到整体温度达到一致速度较慢,而圆柱形纯水温度场变化较模糊,温度带呈现渐变,此类形状纯水从加热区到整体温度达到一致速度较快。2) 总热通量确定时,轴向热通量总体趋势相同,但棱柱纯水有棱边散热效应,棱边越多此效应越强,圆柱纯水最弱;通过模拟分析,可深入理解传热微过程,对热学教学极有帮助,同时为加热器形状的择优选择提供参考信息。

In this paper, the temperature field and heat flux are simulated and researched when the pure water of different qualities and shapes is heated by using one-dimensional steady heat source. The studying methods are as follows. The three-dimensional models of pure water are made using Siemens UG software when their qualities are different and they are cylindrical and prismatic. The mesh is divided with Ansys Icem module. The corresponding temperature field and the heat flux are simulated using Ansys Heat Transfer module. The studying conclusions are as follows. 1) When the initial and final temperature are defined, the changing stages of the temperature are  same from the heated region to the whole pure water of the pure water of all kinds of shapes when they are heated using one dimensional steady heat source. The situation of the tem
perature field of the different prisms pure water having same quality is the same basically, and their temperature stripes present jumping change. The speed is more slowly that the temperature of pure water of prism shapes reaches the same level from the heated region to the whole pure water. The temperature field of pure water of cylinder shapes is fuzzy, the temperature stripe changes gradually. The speed is faster that the temperature of pure water of cylindrical shape reached the same level from the heated region to the whole pure water. 2) When the total heat flux is defined, the general trend of the axial heat flux is same. There is the effect of the dissipation of heat at the edges, and the effect is becoming stronger and stronger when there are more edges. The effect of pure water of cylinder shapes is the most non-obvious. Through the simulation and analysis work, the micro-processes transfering heat can be understood more deeply. It is helpful to the teaching of thermology. The reference information of how to choose the better shape heating vessel is provided.

文章引用:
韩文娟, 强睿, 陈旭. 一维稳定热源对纯水加热温度场的模拟研究[J]. 应用物理, 2018, 8(12): 523-528. https://doi.org/10.12677/APP.2018.812065

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