6513. What is the shear rate at the pipe wall, in case of laminar flow of Newtonion fluids in a pipe of diameter ‘D’ & length ‘L’ incurring a pressure drop ‘Δp’ with average velocity ‘Vavg’? September 7, 2025 by Admin D Δp/8L D Δp/4L 8 . Vavg/D 4 . Vavg/D ✅ The correct answer is option C.
