This document discusses computational fluid dynamics (CFD) and its applications. It provides an overview of why CFD is used for analysis and design, specifically for simulating fluid phenomena more cost effectively and rapidly than physical experiments. It also lists common applications of CFD in fields like aerospace, automotive, biomedical, and more. Additionally, it outlines the basic steps of CFD which include dividing the fluid volume into sections, simplifying equations, setting boundary conditions, and solving the equations to model fluid flow.