Question

Water at 10 degrees Celsius and a velocity of 2.5 m/s is flowing along a 4.5 m long flat plate at a uniform temperature of 40 degrees Celsius. If the plate is 1.5 m wide, determine:

a) the distance from the leading edge of the plate where the flow becomes turbulent,

b) the heat transfer rate between the plate and the flowing water,

c) the fraction of the force exerted by the water on the first half of the plate from the leading edge, as a fraction of the force over the total length of the plate.

Use the following properties of water: density = 997 kg/m^3, dynamic viscosity = 0.89 * 10^-3 kg/m-s, specific heat at constant pressure = 4.181 kJ/kg-K, thermal conductivity = 0.61 W/m-K

Answer 1

Step Velo plate /1) 4 5m length odtplae () 5 Stupo Reynold numb) 925x) beCome o.89 x10 匕 E 60986 0-8 уз 0036x 06 4.5 4031

Step 4 rorm hAAT 429081 X ( 4.5X15) x (46-70 见 864.138 kyo glep 사dan-force wall Na then χ= 2.0.5 225 2.25)、9- 30,927 N :2-25 13床 2.5)45M (45) 54-936 자 30.329 54 ,936 2-2.95 느 0.552-