Section: Fluid Mechanics | Marks: 1
In a two-dimensional flow field, the velocities in the x- and y- directions are u and v, respectively. The shear stress for a Newtonian fluid having dynamic viscosity µ is given by
- A. ∂ ∂ − ∂ ∂ y u x v μ
- B. y v ∂ ∂ μ 2
- C. x u ∂ ∂ μ 2
- D. ∂ ∂ + ∂ ∂ y u x v μ
Answer: D. ∂ ∂ + ∂ ∂ y u x v μ