Repeat Prob. 8–99 for the location x/D = 90.

Data from problem 99

Ethylene glycol-distilled water mixture with a mass fraction of 0.72 and a flow rate of 2.05 × 10^-4 m³/s flows inside a tube with an inside diameter of 0.0158 m and a uniform wall heat flux boundary condition. For this flow, determine the Nusselt number at the location x/D = 10 for the inlet tube configuration of

(a) Bell-mouth

(b) Re-entrant. Compare the results for parts (a) and (b). Assume the Grashof number is Gr = 60,000. The physical properties of ethylene glycol-distilled water mixture are Pr = 33.46, v = 3.45 × 10^-6 m²/s and μ_b/μ_s = 2.0.