Development Of Numerical Simulation Platform Based On Qt And FLUENT For Air-conditioning Airflow Of High-speed Train

At present,the use of CFD technology to study on high speed train air conditioning ventilation effect is more and more paid attention by people.But the commercial CFD software are strongly professional,complicated to operate,and difficult to grasp quickly.Therefore,it is necessary to use a simple simulation platform to improve the development efficiency of train air conditioning designers.Based on the situation above,this thesis use Qt application development framework to conduct the secondary development and obtain the numerical simulation platform of air conditioning and ventilation for high speed train on the basis of commercial CFD software such as GAMBIT,FLUENT and CFD-Post.The main research contents are as follows:1.Through the secondary development of GAMBIT and the editing of script files,parameterized geometric modeling function and automatic mesh generation can be realized.2.The parameterization of model boundary conditions is realized by editing the FLUENT script files.The whole simulation process is finished by calling FLUENT and loading script files.3.Post processing results of typical sections are exported automatically by FLUENT when the simulation is running through adding post-processing statement in the FLUENT script files.Users can view the results of a typical cross section at the post-processing interface.4.Through the secondary development of the post processing software CFD-Post and the useing of CCL language and CSE script files,the parameterization of post processing can be realized.5.The GUI and the background program of the simulation platform is programming by the C++ programming language and the Qt application development framework.The dispaly of interface and the passing of parameters through the simulation platform and the CFD software can be realized.6.Batch files is editing to realize the inteface function of GUI program and CFD software.High-speed train air conditioning designers do not have to master the commercial computational fluid dynamics software to achieve rapid design and development through this simulation platform.The simulation platform can realize parametric modeling.The simulation platform is easy to use and the interface of this platform is friendly.The method used to develop the simulation platform has a certain reference value for the secondary development of similar simulation platform.