Typically, a "mac" zip for SU2 contains pre-compiled binaries so you don't have to build them from source.
A compressed archive containing the executables and libraries. Contents & Installation SU_2.4mac.zip
Indicates this build is pre-compiled for macOS (likely Intel-based, given the version age). Typically, a "mac" zip for SU2 contains pre-compiled
: Look for executables like SU2_CFD , SU2_SOL , and SU2_DOT in a /bin folder. and SU2_DOT in a /bin folder.