Wind flows over a flat plate of length L = 25 mm and width W = 8 mm. The plate is maintained at a constant temperature of 32 °C on both sides using an electric heater generating heat at a rate of Q = 0.5 W which is dissipated to air from both sides of the plate. Consider the temperature of the wind/air as 20 °C and assume that the wind speed does not exceed 100 m/s. The properties of air at this temperature are given as; specific heat capacity Cp = 1.005 kJ/kg-K, thermal conductivity k = 0.0253 W/m-K, Density p = 1.19 kg/m3³, and kinematic viscosity v = 1.522 x 10- 5 m²/s.

Wind flows over a flat plate of length L = 25 mm and width W = 8 mm. The plate is maintained at a constant temperature of 32 °C on both sides using an electric heater generating heat at a rate of Q = 0.5 W which is dissipated to air from both sides of the plate. Consider the temperature of the wind/air as 20 °C and assume that the wind speed does not exceed 100 m/s. The properties of air at this temperature are given as; specific heat capacity Cp = 1.005 kJ/kg-K, thermal conductivity k = 0.0253 W/m-K, Density p = 1.19 kg/m3³, and kinematic viscosity v = 1.522 x 10- 5 m²/s.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Wind flows over a flat plate of length
L = 25 mm and width W = 8 mm. The
plate is maintained at a constant
temperature of 32 °C on both sides
using an electric heater generating
heat at a rate of Q = 0.5 W which is
dissipated to air from both sides of
the plate. Consider the temperature of
the wind/air as 20 °C and assume that
the wind speed does not exceed 100
m/s.
The properties of air at this
temperature are given as; specific
heat capacity Cp = 1.005 kJ/kg-K,
thermal conductivity k = 0.0253
W/m-K, Density p = 1.19 kg/m³, and
kinematic viscosity v = 1.522 x 10
5 m²/s.

If Prandtl number, Pr= 0.72,
determine the average Nusselt
number.

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