and I second Erik's recommendation on the course. I took that course before this site was launched. It was my first opportunity to solve a Thermal problem and learn CFD. I enjoyed the course, especially helping to answer student questions, that I went through the course a second time just to do that. Professor Bhaskaran recognized me for answering so many questions that he made me a TA on the site so my posts were labeled that way instead of just being a student. He even sent me a Cornell Engineering tee-shirt! But the best thing he did was tell me that Ansys had created a Student Community and that I might enjoy answering questions there. That was how I joined this site so early, which was later renamed the Forum.