Question

The term 2*ω is called as _____________

(a) Velocity

(b) Divergence

(c) Angular velocity

(d) Vorticity

The question was posed to me in a job interview.

My doubt stems from Angular Velocity, Vorticity, Strain topic in section Aerodynamics – Fundamental Principles and Equations of Aerodynamics

Answer 1

Right option is (d) Vorticity

To explain I would say: Vorticity is twice the angular velocity. The angular velocity of the fluid plays an important role in theoretical aerodynamics and 2*ω occurs frequently and in order to reduce the complexity, we use vorticity.