Some non-Newtonian fluids behave as a Bingham plastic . For which shear stress can be expressed as τ = τy+ μ (duldr) for laminar flow of a Bingham plastic in a horizontal pipe radius R, the velocity profile is given as u(r) = (ΔP/4μL)(r2 − R2) + (τy/μ)(r − R), where ΔP/L is the constant pressure drop along the pipe per unit length, fi is the dynamic viscosity, r is the radial distance from the centerline, and τy is the yield stress of Bingham plastic. Determine (a) the shear stress at the pipe wall and (b) the drag force acting on a pipe section of length L.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.