Chapter 9, Problem 86P

Engine oil at $T=60°C$ is forced to flow between two very large, stationary by a thin gap height $h=3.60\text{mm}$ (Fig. 9-86). The plate dimensions are $L=1.25\text{m}$and $W=0.550\text{m}$ . The outlet pressure is atmospheric, and the inlet pressure is 1 atm gage pressure. Estimate the volume flow rate of oil. Also calculate the oil flow, based on gap height h and average velocity V. Is the flow laminar or turbulent?

Answer: $2.39\times {10}^{-3}{\text{m}}^3\text{/s},51.8$ laminar

Figure P9-86