Tangential velocity of the surface of a sphere refers to the component of velocity that is parallel to the surface of the sphere at a specific point. It describes the rate at which a point on the surface of the sphere is moving in the direction tangent to the surface, without accounting for any motion normal to the surface.
- V𝜃 is the tangential velocity at the point on the sphere’s surface.
- V∞ is the free stream velocity of the approaching flow.
- 𝜇 is the dynamic viscosity of the fluid.
- R is the radius of the sphere.
- sin𝜃 represents the sine of the angle between the local tangent to the sphere’s surface and the direction of the approaching flow.