-2- Determine the temperature distribution in the thermal boundary layer assuming third degree polynomial: T(x, y) =b, +b,y+b,y +b,y
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A: For solution refer below images.
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Q: 4. A car engine with the dimensions 0.6 m high, 0.50 m-wide, and 0.8-m- long. The bottom surface of…
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- % change in laminar boundary layer thickness in the end of the plateDuring a cold winter day, wind at 55 km/h is blowing parallel to a 4m high and 10m long wall of a house. If the air outside is at 5 degrees Celsius and the surface temperature of the wall is 12 degrees Celsius , determine the rate of heat loss from the wall by convection. What would your answer be if the wind velocity has doubled? From Table A-1:thermal conductivity, k = 0.0246 W/m degrees Celsiusviscosity, v = 1.4 x 10^-5 m^2/sPrandtl no. Pr = 0.717Flue gases from an incinerator are released to atmosphere using a stack that is 0.6 m in diameter and 10.0 m high. The outer surface of the stack is at 40°C and the surrounding air is at 10°C. Determine the rate of heat transfer from the stack assuming (a) there is no wind and (b) the stack is exposed to 20 km/h winds.
- Determine the temperature of 0.25kg/s of air after passing through an electrical resistor whose power is 20kW. The initial temperature of the air is 20 degrees Celsius.air at a dry ball temperature of 80 degrees C and 4% RH is passed over the cooling coil so that the temperature of the air dry ball becomes 35 degrees Celsius. how much heat is released from the air in the process? (answer in kj / kg)An aluminium canoe moves horizontally along the surfaceof a lake at 8.0 mi/h.The temperature of the lake water is50°F. The bottom of the canoe is 18 ft long and is flat. Is theboundary layer on the canoe bottom laminar or turbulent?. Thekinematic viscosity of Water at 50°F is 1.516 *10-5ft2/s.
- The top surface of the passenger car of a train moving at a velocity of 70 km/h is 2.8 m wide and 8 m long. The top surface is absorbing solar radiation at a rate of 200 W/m2, and the temperature of the ambient air is 30°C. Assuming the roof of the car to be perfectly insulated and the radiation heat exchange with the surroundings to be small relative to convection, determine the equilibrium temperature of the top surface of the car.9. The gas density is 0.75 kg per cubic meters and air density is of 1.15 kg per cubic meter. If thedriving pressure is 0.25 KPA. Determine the height of the chimney. 10. A powerplant situated at an altitude having an ambient air of 96.53 KPa and 23.88 degreeCelsius. Flue gases at a rate of 5.0 kg per second enter the stack at 200 degree Celsius andleaves at 160 degree Celsius. The flue gases gravimetric analysis are 18% CO2, 7% O2 and 75%N2. Calculate the height of the stack necessary for a driving pressure of 0.20 KPaKindly answer all please. Thank youA 1.2-in-outer-diameter pipe is to span across a river at a 115-ft-wide section while being completely immersed in water. The average flow velocity of the water is 8 ft/s, and its temperature is 70°F. Determine the drag force exerted on the pipe by the river.
- Engine oil at a temperature of 4 oC is pushed over a 20 cm square plate at a speed of 1.2 m / s. The plates are heated to a uniform temperature of 60oC. Count the heat released by the plate!How does the viscosity affect the drag force?Q6: A large vertical plate 6.1 m high and 1.22 m wide is maintained at a constant temperature of 57+C and exposed to atmospheric air at 4°C. Calculate the heat lost by the plate. Answers: Q=1907 W