Water flows through a rectangular cross section that has a uniform wall temperature of 350 K. The channel cross section is 5 mm × 10 mm. The water enters the channel with a velocity of 0.13 m/s. At a...

Water flows through a rectangular cross section that has a uniform wall temperature of 350 K. The channel cross section is 5 mm × 10 mm. The water enters the channel with a velocity of 0.13 m/s. At a location 37.7 cm downstream from the inlet, the local mean temperature is 300 K, and the local pressure is 1.2 bar. Find the local heat transfer coefficient by using the method of Muzychka and Yovanovich (2004) (see Equations 4.6.5 and 4.6.6). Compare the result with numerical calculation results summarized in Table 4.9.

 Hint: Note that the problem represents a combined entrance effect.