Hello, i just want to ask if changing materials in solidworks affects flow of a certain system. I am currently conducting flow simulation for centrifugal fan with different impeller materials (Polyetheretherketone and Aluminium Alloy 6061-T6). then the efficiency is 71.5% for PEEK and 71.8% for Alloy, im just wondering is the materials really matters in flow simulation or its just the same, im using