基于标准中间文件的CAD-CFD接口开发与应用

船舶行业的虚拟试验系统需要在CAD软件中建模在CFD软件中分析计算,两者往往需要重复建模,或者需要花费大量精力进行数据转换和复用。为此,提出在CAD和CFD接口程序设计中建立标准中间文件的方法,两者可共用一套标准数据,实现快速建模。介绍设计的标准中间文件格式;并设计接口程序抽取、解析标准中间文件中的船体型值表数据,在UG中自动创建船体模型,根据计算域参数和网格信息数据在Gambit中自动建立计算域、划分网格,导出CFD软件Fluent支持的msh格式数据,最终完成流体分析,解决了手工工作的繁琐和不系统问题。

Development and Application of CAD-CFD Interface Based On Standards Intermediate File

Virtual test systems of shipbuilding industry need to model in CAD software,analyze in CFD software.But there is no direct interface between the two procedures available.The method of establishment standard intermediate file in program designed of CAD-CFD interface was proposed.the format of standard intermediate file was described.The interface program was designed to extract datum of ship offset and create automatically the hull model in UG.The computational domain parameters and grid information was gotten to create the computational domain and mesh of ship model.The ’msh’ format data of Fluent software can be exported to carry out the fluid analysis.The method can resolve the problems of fussy and non-system work by hand.