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Consider a 1.5m long 30cm wide flat plate exposed to two laminar flows of air (6...

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Mechanical Engineering

Consider a 1.5m long 30cm wide flat plate exposed to two laminarflows of air (6 m/s free stream top surface and 12m/s free streambottom surface) at 25ºC and atmospheric pressure. The top andbottom surfaces of the plate are electrically heated (1.5 kW totalpower, heaters assumed infinitesimally thin). The plate consists of3 layers: a top and bottom layer of 1.0 cm balsa wood (k = 0.055W/(m·K)), and a middle layer of 2.0 cm plywood (k = 0.12 W/(m·K)).Assume all of the following conditions apply: a) the generatedsurface heat flux on the top and the bottom surfaces of the plateis uniform; b) the heat is transferred by convection on both sidesof the plate; c) radiation heat transfer is negligible; and d) heattransfer is one-dimensional through the plate and no heat istransferred along the plate. Assume transition occurs at Rex=30,000for this plate.

•Calculate and plot the expected top, bottom and centertemperatures in °C as a function of distance from the leading edgeof the plate.

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