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STAR-CCM+ user program (user library)¹ is a dynamic link library compiled and constructed according to certain rules by an external compiler (usually C/C++, but also supports Fortran in Linux). By registering the constructed dynamic link library in the sim file, certain custom functions can be implemented. A user library usually contains one or more user-defined functions, which are generally used to implement special configuration or field functions.

Uer library need to register dynamic link libraries before they can be called, and the format of dynamic link libraries is often closely related to the operating system, hardware platform, etc. Therefore, user library are usually compiled for specific platforms and cannot run across platforms.

The STAR-CCM+ Simulation Assistant is equivalent to a plug-in that encapsulates Java macro commands. By calling macro commands, some procedural operations are performed. Compared with directly executing Java macro files, it can interact with users better and is obviously more friendly to users who are not familiar with Java. Because the simulation assistant is mostly used in pre- and post-processing, many consulting companies tend to adopt the same approach when developing customized plug-ins for this purpose.

As mentioned earlier, the recording and writing of STAR-CCM+ macro files are essentially Java files, so it can be developed and debugged using Java programming methods. If complex business scenarios are involved, additional functions need to be added. The program itself is relatively complex, and it is difficult to wait until the entire program is written before testing it. It is inevitable to debug during the development process. The development tool used by the official document is the old version of NetBeans. Many functions have changed. In addition, the official document description is too simple. Most people are still confused about the debugging process of STAR-CCM+ after reading it.VSCode As a leader in emerging IDE, you can not only support Java programming through expansion, but also copilot To expand the integrated powerful AI programming capabilities, this article uses VSCode to demonstrate the debugging process of STAR-CCM+ macro files.