Indoor thermal environment is one of most important parts of HVAC, and with rapid development of CFD technology and computer technology, CFD software is become a very useful tool for the research of indoor thermal environment. Abroad, there are some mature business softwares, but all of them are expensive, and in the domestic this kind of software is scarce. So it is very meaningful to develop this kind of software with independent intellectual property right. In this paper, hybrid programming mode of Visua...