The short answer is . Aspen Technology (AspenTech) does not offer a completely free, unrestricted version of Aspen HYSYS for individual student download.
If you cannot access Aspen HYSYS through your university, several free alternatives can help you learn process simulation and complete projects. These are legal, open-source options that are great for learning. aspen hysys download student
He unzipped it. He ran the installer.