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7.10 Consider atmospheric air at 25°C and a velocity of 25 m/s flowing over both surfaces...
Consider atmospheric air at 20°C and a velocity of 30 m/s flowing over both surfaces of...
Consider atmospheric air at 20°C and a velocity of 30 m/s flowing over both surfaces of a 1-m-long flat plate that is maintained at 130°C. Determine the rate of heat transfer per unit width from the plate for values of the critical Reynolds number corresponding to 105, 5 × 105, and 106
Problem 1: Atmospheric air at 25°C flows over both surfaces of 2 m long flat plate...
Problem 1: Atmospheric air at 25°C flows over both surfaces of 2 m long flat plate maintained at 125°C. For upper surface, velocity of air is 1 m/s and for lower surface, velocity is 10 m/s. (Rex,c = 5x105) (a) Determine the flow condition for upper and lower surfaces. (Laminar, or turbulent). If the condition is that laminar to turbulent is taking place, calculate the position where transition from the laminar to turbulent happens. (b) Determine the rate of heat...
Air at atmospheric pressure and temperature of 565 C flows with velocity of 0915 m/sec along...
Air at atmospheric pressure and temperature of 565 C flows with velocity of 0915 m/sec along a flat plate which is kept at a uniform temperature of 121.1 C. Determine the local heat transfer coefficient hk) at a distance of 0,61 meter from the leading edge of the plate and the total heat transfer coefficient hm over the length of x 0 to x= 0.61m peer feet of plate width. Air at average temperature has Pr 0.62, k-0.0313 W/m. C...
Air at atmospheric pressure and temperature of 56 5 C flows with velocity of 0915 m/sec...
Air at atmospheric pressure and temperature of 56 5 C flows with velocity of 0915 m/sec along a flat plate which is kept at a uniform temperature of 121.C Determine the local heat transfe coefficient hx) at a distance of 0.61 meter from the leading edge of the plate and the t transfer coefficient h. over the length of 0to061m peer feet of plate width Air at average temperature has Pr 062, 00313 W/m. C and u 0.22310 m/se
RCES Problem 7.002 Engine oil at 100°C and a velocity of 0.20 m/s flows over both...
RCES Problem 7.002 Engine oil at 100°C and a velocity of 0.20 m/s flows over both surfaces of a 1-m-long flat plate maintained at 20°C 001 Determine: (a) The velocity and thermal boundary layer thicknesses at the trailing edge. (b) The local heat flux and surface shear stress at the trailing edge. (c) The total drag force and heat transfer per unit width of the plate. 02 Determine the velocity boundary layer thickness 6 at the trailing edge, in m....
4) Air at 101 kPa and 360 K flows at 15 m/s over a flat plate...
4) Air at 101 kPa and 360 K flows at 15 m/s over a flat plate maintained at 300 K Assume that the transition Reynolds number is 5x10 (0.332R 12Pr1/3 Re < 5 x 105 0.029Repr0:43 5 x 105 < Re <3 x 107 Assume that k-0.03 W/( mK), 20x10* m?ls, Pr-0.7.p=1.16 kg/m a) If the plate is 2 m long, sketch the local heat transfer coefficient over the plate. Specify the functional form of h with respect tox b)...
Air at T=25°C and pressure P=1 bar flows over a square plate with a velocity V=1...
Air at T=25°C and pressure P=1 bar flows over a square plate with a velocity V=1 m/s. This plate has a length L= 1 m and it is heated over its entire length; the plate temperature is constant Tp=100°C. The following data are given. For air: dynamic viscosity: mu = 1.9*10–5 kg/(m.s); density: rho = 1.05 kg/m3; conductivity k = 0.03 W/(m K); Specific heat Cp = 1.007 kJ/(kg K); Prandtl number Pr = 0.7 For laminar flow over a...
Heat Transfer Please be neat and organized for a thumbs up! Problem 3 Atmospheric air at...
Heat Transfer
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Problem 3 Atmospheric air at T 300 K and a free stream velocity of u 10 m/s flows over a flat plate L = 2 m long that is maintained at a uniform temperature T-320 K. (a) Calculate the average heat transfer coefficient over the region where the boundary layer is laminar. What is the boundary layer thickness at this location? plate as well as the velocity boundary layer...
Air at atmospheric pressure and a temperature of 25°C is in parallel flow at a velocity...
Air at atmospheric pressure and a temperature of 25°C is in parallel flow at a velocity of 5 m/s over a 1-m-long flat plate that is heated from below with a uniform heat flux of 1250 W/m2. Assume the flow is fully turbulent over the length of the plate. Evaluate properties at 325 K. (a) Calculate the plate surface temperature, Ts(x), in °C, and the local convection coefficient, hx(x ), in W/m2.K. at x = 0.2 m. (b) Calculate the...
Required information Air at 25°C and 1 atm is flowing over a long flat plate with...
Required information Air at 25°C and 1 atm is flowing over a long flat plate with a velocity of 7 m/s. The density and kinematic viscosity of air at 1 atm and 25°C are p= 1.184 kg/m3 and V = 1.562x10-5 m2/s. Calculate the distance from the leading edge of the plate where the flow becomes turbulent. The distance from the leading edge of the plate is m. Required information Air at 25°C and 1 atm is flowing over a...
Problem 1: Atmospheric air at 25°C flows over both surfaces of 2 m long flat plate maintained at 125°C. For upper surface, velocity of air is 1 m/s and for lower surface, velocity is 10 m/s. (Rex,c = 5x105) (a) Determine the flow condition for upper and lower surfaces. (Laminar, or turbulent). If the condition is that laminar to turbulent is taking place, calculate the position where transition from the laminar to turbulent happens. (b) Determine the rate of heat...
Air at atmospheric pressure and temperature of 565 C flows with velocity of 0915 m/sec along a flat plate which is kept at a uniform temperature of 121.1 C. Determine the local heat transfer coefficient hk) at a distance of 0,61 meter from the leading edge of the plate and the total heat transfer coefficient hm over the length of x 0 to x= 0.61m peer feet of plate width. Air at average temperature has Pr 0.62, k-0.0313 W/m. C...
Air at atmospheric pressure and temperature of 56 5 C flows with velocity of 0915 m/sec along a flat plate which is kept at a uniform temperature of 121.C Determine the local heat transfe coefficient hx) at a distance of 0.61 meter from the leading edge of the plate and the t transfer coefficient h. over the length of 0to061m peer feet of plate width Air at average temperature has Pr 062, 00313 W/m. C and u 0.22310 m/se
RCES Problem 7.002 Engine oil at 100°C and a velocity of 0.20 m/s flows over both surfaces of a 1-m-long flat plate maintained at 20°C 001 Determine: (a) The velocity and thermal boundary layer thicknesses at the trailing edge. (b) The local heat flux and surface shear stress at the trailing edge. (c) The total drag force and heat transfer per unit width of the plate. 02 Determine the velocity boundary layer thickness 6 at the trailing edge, in m....
4) Air at 101 kPa and 360 K flows at 15 m/s over a flat plate maintained at 300 K Assume that the transition Reynolds number is 5x10 (0.332R 12Pr1/3 Re < 5 x 105 0.029Repr0:43 5 x 105 < Re <3 x 107 Assume that k-0.03 W/( mK), 20x10* m?ls, Pr-0.7.p=1.16 kg/m a) If the plate is 2 m long, sketch the local heat transfer coefficient over the plate. Specify the functional form of h with respect tox b)...
Heat Transfer
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Problem 3 Atmospheric air at T 300 K and a free stream velocity of u 10 m/s flows over a flat plate L = 2 m long that is maintained at a uniform temperature T-320 K. (a) Calculate the average heat transfer coefficient over the region where the boundary layer is laminar. What is the boundary layer thickness at this location? plate as well as the velocity boundary layer...
Air at atmospheric pressure and a temperature of 25°C is in parallel flow at a velocity of 5 m/s over a 1-m-long flat plate that is heated from below with a uniform heat flux of 1250 W/m2. Assume the flow is fully turbulent over the length of the plate. Evaluate properties at 325 K. (a) Calculate the plate surface temperature, Ts(x), in °C, and the local convection coefficient, hx(x ), in W/m2.K. at x = 0.2 m. (b) Calculate the...
Required information Air at 25°C and 1 atm is flowing over a long flat plate with a velocity of 7 m/s. The density and kinematic viscosity of air at 1 atm and 25°C are p= 1.184 kg/m3 and V = 1.562x10-5 m2/s. Calculate the distance from the leading edge of the plate where the flow becomes turbulent. The distance from the leading edge of the plate is m. Required information Air at 25°C and 1 atm is flowing over a...
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