基于Fluent二次开发地铁通风系统日志文件

Journal File of the Secondary Development of the Fluent Based on the Ventilating System of the Subway

空调设计工程师应用Fluent软件对地铁空调通风系统进行数值分析仿真过程中遇到了诸多问题,如:重复性工作多、对使用者的流体专业知识要求过高等,通过Visual Basic高级编程语言编译仿真平台,调用Journal参数化日志文件,可以解决此类问题.参数化日志文件的应用是对Fluent软件进行二次开发的重要方法,不仅能够提高工作效率而且降低使用者门槛.本文研究内容:1)重点研究了Gambit与Fluent软件的命令流文件(Journal日志文件)的编写方法.2)Gambit与Fluent软件能够根据输入的参数对车体模型自动参数化建模、自动进行数值仿真计算并保存后处理结果.3)Journal日志文件在计算过程中能灵活地实现CFD分析中的相关功能,并且能够对计算结果与实验数据进行对比.因此,Fluent二次开发在实际工程上有着非常广阔的应用前景.

In the process of applying Fluent software on the numerical analysis simulation of the subway air-conditioning and ventilation system, the designer of air-condition engineer may encounter many problems, such as repetitive work, demanding higher fluid professional knowledge and so on, but in this paper through using Visual Basic, the high-level programming language, compiler parameterized simulation system and invoke Journal parameterization log file can solve those problems. Using Journal parameterization log file is the most important method in the secondary development of the Fluent, not only can make the work more efficient but also can reduce the threshold of the user. The research includes three aspects. First, this research especially puts focus on the command stream file writing method （Journal file） of the software Gambit and Fluent. Second, according to the inputexi parameters, the Gambit and Fluent software can automatically build the car body model, conduct numerical simulation calculation and save the Post-Processing Results. The last one, In the process of computing the Journal file of Fluent software can flexibly implement the related functions of CFD analysis, and realize the calculation analysis results compare with the experimental data. On the practical engineering the secondary development of Fluent has a very broad application prospect.