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Consider laminar flow, parallel flow past an isothermal plate of length L, providing...
Consider water at 25°C in parallel flow over an isothermal flat plate with a velocity of...
Consider water at 25°C in parallel flow over an isothermal flat plate with a velocity of 0.5 m/s. (a) Calculate the boundary layer thickness : at x = 3 m. What would be the value of 8, if the flow velocity was 0.05 m/s? (b) Calculate the average heat transfer coefficient over the length x.
For laminar flow over a flat plate, the local heat transfer coefficient hx =x-1/2 where x...
For laminar flow over a flat plate, the local heat transfer coefficient hx =x-1/2 where x is the distance from the leading edge (x-0) of the plate. What is the average heat transfer coefficient from the leading edge to location x
1. For laminar flow over a flat plate, the local heat transfer coefficient, hx, is known to vary as hx~Cx-12 where C is...
1. For laminar flow over a flat plate, the local heat transfer coefficient, hx, is known to vary as hx~Cx-12 where C is a constant and x is the distance from the leading edge (x-0) of the plate. What is the ratio of the average coefficient between the leading edge and some location x on the plate (h,) to the local coefficient at x (h)? (15%)
1. For laminar flow over a flat plate, the local heat transfer coefficient, hx,...
6.4 For laminar flow over a flat plate, the local heat trans- fer coefficient h, is known to vary as x72, where x i...
6.4 For laminar flow over a flat plate, the local heat trans- fer coefficient h, is known to vary as x72, where x is the distance from the leading edge (x = 0) of the plate. What is the ratio of the average coefficient between the leading edge and some location x on the plate to the local coefficient at x? -1/2
6.4 For laminar flow over a flat plate, the local heat trans- fer coefficient h, is known to...
8) Air flows over a flat plate at a velocity of 20 m/s and a temperature...
8) Air flows over a flat plate at a velocity of 20 m/s and a temperature of 20C. The surface temperature of the plate is 134C, and the length of the plate in the direction of flow is 1.5 m. Properties of air may be taken as A-0.030 W/m-C, Pr-0.700, and a/p 2.092E-5 m/s (5% ) What is the location from the leading edge, X, where the flow becomes turbulent Re (20)15 a l Ve30s T20 T LaLS 523 m...
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...
Consider a fully developed laminar flow of an incompressible Newtonian fluid between two infinite parallel plates,...
Consider a fully developed laminar flow of an incompressible
Newtonian fluid between two infinite parallel plates, separated by
a distance of 2B. The z coordinate is the direction of the flow.
The width of the plates is 2W (direction y). The coordinate axis is
located half of the 2 plates.
a) Obtain the distribution of speeds in steady state.
b) Obtain the expression for the maximum velocity and write the
velocity distribution of part a) as a function of the...
Heat Transfer Please be neat and organized for a thumbs up! Problem 3 Atmospheric air at...
Heat Transfer
Please be neat and organized for a thumbs up!
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...
1. A very smooth flat plate of length L-1 m and width b 3 m is immersed parallel to a stream of velocity 2 m/s. For both air and water as the working fluids [5 marks] Show that the flow is completely...
1. A very smooth flat plate of length L-1 m and width b 3 m is immersed parallel to a stream of velocity 2 m/s. For both air and water as the working fluids [5 marks] Show that the flow is completely laminar over the entire plate. a. b. Determine the drag force on one side of the plate. Determine the thicknesses δ, δ*, and θ at the end of the plate (x L). [6 marks] C. For air use,...
Problem 2) Consider convection heat transfer over a flat plate, as shown in the figure. The...
Problem 2) Consider convection heat transfer over a flat plate, as shown in the figure. The flow is parallel to the length (dimension L) of the plate. The plate is maintained at a constant surface temperature, and the Reynolds number Rei- 750,000. The Pr-0.85 for this fluid. What is the correct Nusselt number to calculate the average heat flux along the length of the plate? (A) Nu (0.037Ret5-871) Pr (B) Nu1 -0.664 Re2 Pr (C) Nu 0.332 Re! Pr (D)...
Consider water at 25°C in parallel flow over an isothermal flat plate with a velocity of 0.5 m/s. (a) Calculate the boundary layer thickness : at x = 3 m. What would be the value of 8, if the flow velocity was 0.05 m/s? (b) Calculate the average heat transfer coefficient over the length x.
For laminar flow over a flat plate, the local heat transfer coefficient hx =x-1/2 where x is the distance from the leading edge (x-0) of the plate. What is the average heat transfer coefficient from the leading edge to location x
1. For laminar flow over a flat plate, the local heat transfer coefficient, hx, is known to vary as hx~Cx-12 where C is a constant and x is the distance from the leading edge (x-0) of the plate. What is the ratio of the average coefficient between the leading edge and some location x on the plate (h,) to the local coefficient at x (h)? (15%)
1. For laminar flow over a flat plate, the local heat transfer coefficient, hx,...
6.4 For laminar flow over a flat plate, the local heat trans- fer coefficient h, is known to vary as x72, where x is the distance from the leading edge (x = 0) of the plate. What is the ratio of the average coefficient between the leading edge and some location x on the plate to the local coefficient at x? -1/2
6.4 For laminar flow over a flat plate, the local heat trans- fer coefficient h, is known to...
8) Air flows over a flat plate at a velocity of 20 m/s and a temperature of 20C. The surface temperature of the plate is 134C, and the length of the plate in the direction of flow is 1.5 m. Properties of air may be taken as A-0.030 W/m-C, Pr-0.700, and a/p 2.092E-5 m/s (5% ) What is the location from the leading edge, X, where the flow becomes turbulent Re (20)15 a l Ve30s T20 T LaLS 523 m...
Consider a fully developed laminar flow of an incompressible
Newtonian fluid between two infinite parallel plates, separated by
a distance of 2B. The z coordinate is the direction of the flow.
The width of the plates is 2W (direction y). The coordinate axis is
located half of the 2 plates.
a) Obtain the distribution of speeds in steady state.
b) Obtain the expression for the maximum velocity and write the
velocity distribution of part a) as a function of the...
Heat Transfer
Please be neat and organized for a thumbs up!
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...
1. A very smooth flat plate of length L-1 m and width b 3 m is immersed parallel to a stream of velocity 2 m/s. For both air and water as the working fluids [5 marks] Show that the flow is completely laminar over the entire plate. a. b. Determine the drag force on one side of the plate. Determine the thicknesses δ, δ*, and θ at the end of the plate (x L). [6 marks] C. For air use,...
Problem 2) Consider convection heat transfer over a flat plate, as shown in the figure. The flow is parallel to the length (dimension L) of the plate. The plate is maintained at a constant surface temperature, and the Reynolds number Rei- 750,000. The Pr-0.85 for this fluid. What is the correct Nusselt number to calculate the average heat flux along the length of the plate? (A) Nu (0.037Ret5-871) Pr (B) Nu1 -0.664 Re2 Pr (C) Nu 0.332 Re! Pr (D)...
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