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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.

For frequent Markdown users, image storage has always been a challenge. Markdown itself does not support embedded images, traditionally requiring external links to local or online files. However, publishing articles online raises storage issues. While image hosting services exist, the process can be cumbersome.

ortunately, Markdown supports image rendering via Base64 encoding. This tool Image2Base64 simplifies conversions between image files and Base64 encoding.

1. Features

Below is the graphical interface of the software (this screenshot uses Base64 rendering):