Attempt a numerical solution of Prob 3 93 for SAE 30 oil at 20C Let h 20 cm, L 15 cm and D 4 mm Use the laminar shear approximation from Sec 6 4 8V D, where is the fluid viscosity Account for the decrease in wall area wetted by the fluid Solve for the time required to empty (a) the vertical leg and...

For SAE 30 oil 029 kgm s and 917 kgm3 For laminar flow as given c 8D so ...

Attempt a numerical solution of Prob. 3.93 for SAE 30 oil at 20C. Let h = 20

Question:

Attempt a numerical solution of Prob. 3.93 for SAE 30 oil at 20°C. Let h = 20 cm, L = 15 cm and D = 4 mm. Use the laminar shear approximation from Sec. 6.4: τ ≈ 8μV/D, where μ is the fluid viscosity. Account for the decrease in wall area wetted by the fluid. Solve for the time required to empty (a) the vertical leg and (b) the horizontal leg.