COMSOL Multiphysics is not supported on taki. This software requires intensive interaction with the GUI that serves as CAD interface, which profits from installing the software on your own computer. UMBC provides a license to all users on campus, also for installation on their own computers. More information on downloading COMSOL Multiphysics from DoIT can be found here (note: you must be logged into your myUMBC Account to access this page).
For information about the software itself, see Comsol Multiphysics