AMBIENT_AIR_AT_20_DEGREE_CELSIUS_FLOWS_PAST_A_FLAT_PLATE_WITH_A_SHARP_LEADING_EDGE_AT_3_M/S._THE_PLATE_IS_HEATED_UNIFORMLY_THROUGHOUT_ITS_ENTIRE_LENGTH_AND_IS_MAINTAINED_AT_A_SURFACE_TEMPERATURE_OF_40_DEGREE_CELSIUS._CALCULATE_THE_THICKNESS_OF_THE_THERMAL_BOUNDARY_LAYER._ASSUME_THAT_TRANSITION_OCCURS_AT_A_CRITICAL_REYNOLDS_NUMBER_OF_500000?$

AMBIENT_AIR_AT_20_DEGREE_CELSIUS_FLOWS_PAST_A_FLAT_PLATE_WITH_A_SHARP_

1.	AMBIENT_AIR_AT_20_DEGREE_CELSIUS_FLOWS_PAST_A_FLAT_PLATE_WITH_A_SHARP_LEADING_EDGE_AT_3_M/S._THE_PLATE_IS_HEATED_UNIFORMLY_THROUGHOUT_ITS_ENTIRE_LENGTH_AND_IS_MAINTAINED_AT_A_SURFACE_TEMPERATURE_OF_40_DEGREE_CELSIUS._CALCULATE_THE_THICKNESS_OF_THE_THERMAL_BOUNDARY_LAYER._ASSUME_THAT_TRANSITION_OCCURS_AT_A_CRITICAL_REYNOLDS_NUMBER_OF_500000?$
A.	19.23 mm
B.	18.23 mm
C.	17.23 mm
D.	16.23 mm
Answer» B. 18.23 mm

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Ambient air at 20 degree Celsius flows past a flat plate with a sharp leading edge at 3 m/s. The plate is heated uniformly throughout its entire length and is maintained at a surface temperature of 40 degree Celsius. Calculate the local convective heat transfer coefficient. Assume that transition occurs at a critical Reynolds number of 500000
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AMBIENT_AIR_AT_20_DEGREE_CELSIUS_FLOWS_PAST_A_FLAT_PLATE_WITH_A_SHARP_LEADING_EDGE_AT_3_M/S._THE_PLATE_IS_HEATED_UNIFORMLY_THROUGHOUT_ITS_ENTIRE_LENGTH_AND_IS_MAINTAINED_AT_A_SURFACE_TEMPERATURE_OF_40_DEGREE_CELSIUS._CALCULATE_THE_THICKNESS_OF_THE_THERMAL_BOUNDARY_LAYER._ASSUME_THAT_TRANSITION_OCCURS_AT_A_CRITICAL_REYNOLDS_NUMBER_OF_500000?$
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