Determine velocity and thermal boundary layer thicknesses

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Reference no: EM131197032

1. Consider the following fluids at a film temperature of 300 K in parallel flow over a flat plate with velocity of 1 m/s: atmospheric air, water, engine oil, and mercury.

(a) For each fluid, determine the velocity and thermal boundary layer thicknesses at a distance of 40 mm from the leading edge.

(b) For each of the prescribed fluids and on the same coordinates, plot the boundary layer thicknesses asa function of distance from the leading edge to a plate length of 40 mm.

2. Engine oil is heated by flowing through a circular tube of diameter D _ 50 mm and length L _ 25 m and whose surface is maintained at 150_C.

(a) If the flow rate and inlet temperature of the oil are 0.5 kg/s and 20_C, what is the outlet temperature Tm, o? What is the total heat transfer rate q for the tube?

(b) For flow rates in the range 0.5 _, Compute and plot the variations of Tm,o and q with . For what flow rate(s) are q and Tm,o maximized? Explain your results.

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Reference no: EM131197032

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