Radial velocity () refers to the component of velocity of a fluid or object in the radial direction, which is directed outward from or inward toward a central point. In the context of a sphere, radial velocity specifically refers to the velocity component along a line that originates at the center of the sphere and extends outward or inward through a point on the sphere’s surface.
- Radial velocity (Vr) in m/s
- Freestream velocity (V∞) in m/s
- Angle (𝜃) in rad
- Strength of doublet (𝜇) in m^3/s
- Radius of the sphere (R) in m