The coefficient of drag (Cd), also known as the drag coefficient, is a dimensionless parameter used to quantify the resistance or drag experienced by an object as it moves through a fluid, such as air or water. It is an essential concept in fluid dynamics and aerodynamics.
- cd is the drag coefficient.
- D’ is the drag force acting on the body.
- q ∞ is the freestream dynamic pressure of the fluid flow.
- c is the reference area for two-dimensional body