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Air at 70℉ flows parallel to a smooth, thin, flat plate at 13 ns. The plate...
Water at 15.6 [°C] (with kinematic viscosity of 1.12 [cSt]) flows over a flat plate generatinga boundary layer. The thickness of the boundary layer at 0.50 [m] from the leading edge is 6 [mm] (a)...
Water at 15.6 [°C] (with kinematic viscosity of 1.12 [cSt]) flows over a flat plate generatinga boundary layer. The thickness of the boundary layer at 0.50 [m] from the leading edge is 6 [mm] (a) Is the boundary layer laminar or turbulent at that point? (b) At what distance it becomes turbulent? (c) What is the layer thickness at that point?
Water at 15.6 [°C] (with kinematic viscosity of 1.12 [cSt]) flows over a flat plate generatinga boundary layer. The...
Consider air flows with velocity of U?=U= 10 m/s over a semi-finite smooth flat plate with...
Consider air flows with velocity of U?=U= 10 m/s over a
semi-finite smooth flat plate with L=97 cm long. Calculate the
followings by assuming ? = 1.568 x 10-5 m2/s and ?=1.177
kg/m3.
Figure 1 : Boundary layer over a flat plate
Consider air flows with velocity of U?=U=10 m/s over a
semi-finite smooth flat plate with L=97 cm long. Calculate the
followings by assuming ? = 1.568 x 10-5 m2/s and ?=1.177
kg/m3.
b) Under some flow and boundary...
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...
Exercise 2 Air at 20 °C and 1 atm flows over a flat plate at 50...
Exercise 2 Air at 20 °C and 1 atm flows over a flat plate at 50 m/s. The plate is 300 cm long and is maintained at 60C. The width of the plate is 2 m. The critical Rec = 5 x 105 The properties are Conductivity k = 0.0263 W/mK, kinematic viscosity nu = v = 15.89 x 10-6 m²/s, Prandtl number is Pr=0.707 Density rho = p = 1.128 kg/m3 1. Determine the critical length Xc 2. Determine...
Water flows past a flat plate that is oriented parallel to the flow with an upstream...
Water flows past a flat plate that is oriented parallel to the flow with an upstream velocity of 0.9 m/s. (a) Determine the approximate location downstream from the leading edge where the boundary layer becomes turbulent. (b) What is the boundary layer thickness at this location? Assume that the water tempetature is 15.6 °C Use Approximate Physical Properties of Some Common Liquids (SI Units). (a) xa (b) 8 - LINK TO TEXT
Problem 4 Air at 100 C flows across a thin, flat plate of subliming naphthalene that...
Problem 4 Air at 100 C flows across a thin, flat plate of subliming naphthalene that is 3.4 m long. The Reynolds number at the trailing edge of the plate is at the upper limit for a laminar boundary layer (Re 5e5). Estimate: (a) the average rate of sublimation in kmol/s*m2; and (b) the local rate of sublimation 0.5 m from the leading edge. Vapor pressure of naphthalene = 10 torr viscosity of air 0.0215 cP; molar density of air...
Part 1 A thin plate 6 ft long and 3 ft wide is submerged and held...
Part 1 A thin plate 6 ft long and 3 ft wide is submerged and held stationary in a stream of water (T-60F) that has a velocity of 10 ft/s. What is the thickness of the boundary layer on the plate for Re, - 500,000 (assume the boundary layer is still laminar), and at what distance downstream of the leading edge does this Reynolds number occur? What is the shear stress on the plate at this point? (a) which of...
Consider 2 thin, flat plates (Plate 1 and Plate 2 shown below) with air flowing over...
Consider 2 thin, flat plates (Plate 1 and Plate 2 shown below) with air flowing over them with a speed of 6 m/s. Plate 1 is 10 cm by 20 cm and Plate 2 is 30 cm by 20 cm. What is the ratio of the drag coefficient of Plate 2 to the drag coefficient of Plate 1 (Coz/Cp)? Take the critical Reynolds number for transition from laminar to turbulent flow to be 1,000,000. The kinematic viscosity of air (v...
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...
help Consider a flat plate, that is 4m wide and 1m long. The plate is immersed...
help
Consider a flat plate, that is 4m wide and 1m long. The plate is immersed water flowing at 0.2m/s (free stream parallel to the plate). Density of the water is 1000 kg/mº Kinematic viscosity of the water is 1.57x10mºsAssume the velocity profile is quadratic and a laminar boundary layer is formed. a. Find the displacement thickness at the center of the plate b. Find the shear stress at the center of the plate
Water at 15.6 [°C] (with kinematic viscosity of 1.12 [cSt]) flows over a flat plate generatinga boundary layer. The thickness of the boundary layer at 0.50 [m] from the leading edge is 6 [mm] (a) Is the boundary layer laminar or turbulent at that point? (b) At what distance it becomes turbulent? (c) What is the layer thickness at that point?
Water at 15.6 [°C] (with kinematic viscosity of 1.12 [cSt]) flows over a flat plate generatinga boundary layer. 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...
Exercise 2 Air at 20 °C and 1 atm flows over a flat plate at 50 m/s. The plate is 300 cm long and is maintained at 60C. The width of the plate is 2 m. The critical Rec = 5 x 105 The properties are Conductivity k = 0.0263 W/mK, kinematic viscosity nu = v = 15.89 x 10-6 m²/s, Prandtl number is Pr=0.707 Density rho = p = 1.128 kg/m3 1. Determine the critical length Xc 2. Determine...
Water flows past a flat plate that is oriented parallel to the flow with an upstream velocity of 0.9 m/s. (a) Determine the approximate location downstream from the leading edge where the boundary layer becomes turbulent. (b) What is the boundary layer thickness at this location? Assume that the water tempetature is 15.6 °C Use Approximate Physical Properties of Some Common Liquids (SI Units). (a) xa (b) 8 - LINK TO TEXT
Problem 4 Air at 100 C flows across a thin, flat plate of subliming naphthalene that is 3.4 m long. The Reynolds number at the trailing edge of the plate is at the upper limit for a laminar boundary layer (Re 5e5). Estimate: (a) the average rate of sublimation in kmol/s*m2; and (b) the local rate of sublimation 0.5 m from the leading edge. Vapor pressure of naphthalene = 10 torr viscosity of air 0.0215 cP; molar density of air...
Part 1 A thin plate 6 ft long and 3 ft wide is submerged and held stationary in a stream of water (T-60F) that has a velocity of 10 ft/s. What is the thickness of the boundary layer on the plate for Re, - 500,000 (assume the boundary layer is still laminar), and at what distance downstream of the leading edge does this Reynolds number occur? What is the shear stress on the plate at this point? (a) which of...
Consider 2 thin, flat plates (Plate 1 and Plate 2 shown below) with air flowing over them with a speed of 6 m/s. Plate 1 is 10 cm by 20 cm and Plate 2 is 30 cm by 20 cm. What is the ratio of the drag coefficient of Plate 2 to the drag coefficient of Plate 1 (Coz/Cp)? Take the critical Reynolds number for transition from laminar to turbulent flow to be 1,000,000. The kinematic viscosity of air (v...
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...
help
Consider a flat plate, that is 4m wide and 1m long. The plate is immersed water flowing at 0.2m/s (free stream parallel to the plate). Density of the water is 1000 kg/mº Kinematic viscosity of the water is 1.57x10mºsAssume the velocity profile is quadratic and a laminar boundary layer is formed. a. Find the displacement thickness at the center of the plate b. Find the shear stress at the center of the plate
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