The industry standard for open-source Computational Fluid Dynamics (CFD).
So a "free license" gives you a taste, but you quickly hit paywalls. comsol multiphysics free license
Elmer is perhaps the closest free competitor to COMSOL. It is an open-source multiphysics solver developed by Finnish universities. What is COMSOL Multiphysics
: Intended for evaluating the software's capabilities for your specific research or engineering projects. How to get it : You typically need to contact a COMSOL Sales Representative or attend a COMSOL workshop/webinar , where trial codes are often provided to attendees. 2. Academic and Institutional Access comsol multiphysics free license
Attending COMSOL workshops or "demo days" can sometimes provide 30-day trial keys to attendees. 2. Academic and "Class Kit" Access