The ANSYS Student version is a free downloadable package available for students, educators, and hobbyists. Unlike older "student" versions which were often stripped-down or time-bombed demo versions, the current ANSYS Student offering is surprisingly robust. It includes the core solvers for structural mechanics, fluid dynamics, and thermal analysis.
If you run into trouble, skip the standard tech support and head to the Ansys Learning Forum. It’s a community-driven space where students and experts help each other troubleshoot simulation errors. ansys educational version