Assume constant acceleration, During a winter day, wind at 58 km/h, 5°C, and 1 atm is blowing parallel to a 3.5-m-high a...
Assume constant acceleration, During a winter day, wind at 58 km/h, 5°C, and 1 atm is blowing parallel to a 3.5-m-high and 9-m-long wall of a house. Approximating the wall surfaces as smooth, determine the friction drag acting on the wall. What would your answer be if the wind velocity has doubled? How realistic is it to treat the flow over side wall surfaces as flow over a flat plate?
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Assume constant acceleration, During a winter day, wind at 58 km/h, 5°C, and 1 atm is blowing parallel to a 3.5-m-high a...
Heat Transfer 1 Problem 1 During a cold winter day, wind at 55 km/h is blowing...
Heat Transfer 1 Problem 1 During a cold winter day, wind at 55 km/h is blowing parallel to a 4-m-high and 10-m-long wall of a house. If the air outside is at 5°C and the surface temperature of the wall is 12°C, determine (a) friction coefficient at the center of the wall (b) heat transfer coefficient at the center of the wall (c) drag force on the wall (d) the rate of heat loss from on the wall Use Table...
Wind is blowing at 5 km/h over a building wall of size 5 mx10 m. Air temperature is 0°C and wall 1) surface is at 1...
Wind is blowing at 5 km/h over a building wall of size 5 mx10 m. Air temperature is 0°C and wall 1) surface is at 10°C. 1) Calculate the avg. heat transfer coefficient along the 10 m width of the wall. 2) Calculate the local heat transfer coefficient at a location 10 cm from the leading edge of the wall. (25pts)
Wind is blowing at 5 km/h over a building wall of size 5 mx10 m. Air temperature is 0°C...
Air at 25 °C and 1 atm is flowing over a long flat plate with a...
Air at 25 °C and 1 atm is flowing over a long flat plate with a velocity of 8 m/s. (a) Determine the distance from the leading edge of the plate where the flow becomes turbulent. (b) What will be the boundary layer thickness at the end of the plate? (c) If the plate is a 2m by 2 m square, what will be the friction drag acting on the plate? Schematic Given ssumptions Find v=8m/s xcr ,FD ,δ@x=L L-2m...
Heat Transfer 1 Problem 1 During a cold winter day, wind at 55 km/h is blowing parallel to a 4-m-high and 10-m-long wall of a house. If the air outside is at 5°C and the surface temperature of the wall is 12°C, determine (a) friction coefficient at the center of the wall (b) heat transfer coefficient at the center of the wall (c) drag force on the wall (d) the rate of heat loss from on the wall Use Table...
Wind is blowing at 5 km/h over a building wall of size 5 mx10 m. Air temperature is 0°C and wall 1) surface is at 10°C. 1) Calculate the avg. heat transfer coefficient along the 10 m width of the wall. 2) Calculate the local heat transfer coefficient at a location 10 cm from the leading edge of the wall. (25pts)
Wind is blowing at 5 km/h over a building wall of size 5 mx10 m. Air temperature is 0°C...
Air at 25 °C and 1 atm is flowing over a long flat plate with a velocity of 8 m/s. (a) Determine the distance from the leading edge of the plate where the flow becomes turbulent. (b) What will be the boundary layer thickness at the end of the plate? (c) If the plate is a 2m by 2 m square, what will be the friction drag acting on the plate? Schematic Given ssumptions Find v=8m/s xcr ,FD ,δ@x=L L-2m...
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