plate 450 mm x 150 mm has been placed longitudinally in a stream of crude oil (specific gravity 0.925 and kinematic viscosity of 9.0 x 10-5 m2/s) which flows with velocity of 6 m/s. Calculate: (i) the friction drag on the plate; (ii) the thickness of the boundary layer at a distance 215 mm from the trailing edge;(iii) the thickness of the boundary layer at the trailing edge; (iv) shear stress at the trailing edge.

plate 450 mm x 150 mm has been placed longitudinally in a stream of crude oil (specific gravity 0.925 and kinematic viscosity of 9.0 x 10-5 m2/s) which flows with velocity of 6 m/s. Calculate: (i) the friction drag on the plate; (ii) the thickness of the boundary layer at a distance 215 mm from the trailing edge;(iii) the thickness of the boundary layer at the trailing edge; (iv) shear stress at the trailing edge.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.24P: Engine oil at 100C flows over and parallel to a flat surface at a velocity of 3 m/s. Calculate the...

See similar textbooks

Similar questions

Two large fixed parallel planes are 12 mm apart. The space between the surfaces Example is filled with oil of viscosity 0.972 N.s/m². A flat thin plate 0.25 m² area moves through the oil at a velocity of 0.3 m/s. Calculate the drag force: (1) When the plate is equidistant from both the planes, and (ii) When the thin plate is at a distance of 4 mm from one of the plane surfaces. Fixed parallel plane 6 mm Plate 0.3 m/s F 6 mm 12 mm
b. A smooth thin plate 5 m long and 1 m wide is placed in air streamed moving at 3 m/s with its length parallel with the flow. Analyse the drag force on each side of the plate. The density of the air is 1.2 kg/m3 and the kinematic viscosity is 1.6 x 10-5 m²/s.
Two large fixed parallel planes are 12 mm apart. The space between the surfaces is filled with oil of viscosity (0.972 Pa.s). A flat thin plate 0.25 m² area moves through the oil at a velocity of 0.3 m/s. Calculate the drag force: (i) When the plate is equidistant from both the planes, and (ii) When the thin plate is at a distance of 4 mm from one of the plane surfaces. 12 mm Plate Fixed parallel plane 6 mm 6 mm 0.3 m/s 12 mm 8 mm 4 mm 0.3 m/s F
8. Determine the drag force for a plate with a length of 48 cm and width of 15 cm. The plate is positioned in an oil stream moving at a velocity of 6.1 m/s. Also, find and the boundary layer thickness and shear stress at the rear-edge of the plate. The specific gravity of the oil is 0.925 and its kinematic viscosity is 0.9 x 104 m²/s
a smooth flat plate of length 5 m and width 2 m is moving with a velocity of 4 m/s in stationary air of density as 1.25 kg/m³ and kinematic viscosity 1.5 x 10-5 m²/s. determine thickness of the boundary layer at the trailing edge of the smooth plate. find the total drag on one side of the plate assuming that the boundary layer is turbulent from the very beginning.
A 30-cm-diameter smooth ball of density Phall = 210 kg/m³ is tied to an object on the bottom of a river as shown on the right. Determine the angle 0 when the speed of the river current is a. U = 1.66 m/s b. U = 0.13 m/s c. For which velocity, the drag coefficient is lower? Explain why? 30° Take the density and viscosity of water in the river Pwater = 1000 kg/m², µwater = 0.001 kg/m's. Neglect the weight of the cable and the drag on it. 400 200 100 80 60 40 20 10 0.8 0.6 0.4 0.2 0.08 0.06 2 4 68 10- 2 4 68 2 4 68 2 4 68 102 2 4 68 103 pvd 2 4 68 10 2 4 68 10 100 10 105 Reynolds number, Drag coefficient, Cp
Air at 20 °C flows at V = 10 m/s over a flat plate of length L= 1.52 m and width W = 2 m.Calculate the boundary layer thickness at the trailing edge of plate and drag force on one sideof plate if:a. Surface of plate is smooth.b. Surface of plate is rough.The air properties at 20 °C are: Density, ? = 1.2 kg/m3and dynamic viscosity, ? = 1.8x 10-5kg/m·s and kinematic viscosity, ν = 1.516×10-5m2/s
Air at 20 °C flows at V = 10 m/s over a flat plate of length L= 1.52 m and width W = 2 m.Calculate the boundary layer thickness at the trailing edge of plate and drag force on one sideof plate if:a. Surface of plate is smooth.b. Surface of plate is rough.The air properties at 20 °C are: Density, ? = 1.2 kg/m3and dynamic viscosity, ? = 1.8x 10-5kg/m·s and kinematic viscosity, ν = 1.516×10-5m2/s. kindly give me the solution of this problem with correct and logical reasoning.
Air at 20 °C flows at V = 10 m/s over a flat plate of length L= 1.52 m and width W = 2 m.Calculate the boundary layer thickness at the trailing edge of plate and drag force on one sideof plate if:a. Surface of plate is smooth.b. Surface of plate is rough.The air properties at 20 °C are: Density, ? = 1.2 kg/m3and dynamic viscosity, ? = 1.8x 10-5kg/m·s and kinematic viscosity, ν = 1.516×10-5m2/s. I got the first solution which was wrong kindly solve it correctly
A stationary sphere in water moving at a velocity of 2.3 m/s experiences a drag of 6N.Another sphere three times the diameter is placed in a wind tunnel.The ratio of kinematic viscosities of air and water is 15, and the density of air is 1.28 kg/m3.Determine the velocity of the air and the drag which will give dynamically similar conditions.
Air at 20 °C flows at V = 10 m/s over a flat plate of length L= 1.52 m and width W = 2 m. Calculate the boundary layer thickness at the trailing edge of plate and drag force on one side of plate if: a. Surface of plate is smooth.b. Surface of plate is rough. The air properties at 20 °C are: Density, ? = 1.2 kg/m3 and dynamic viscosity, ? = 1.8 x 10^-5 kg/m·s and kinematic viscosity, ν = 1.516×10^-5 m2/s.
A rotary mixer is constructed from two circular disks as shown. The mixer is rotated at 60 rpm in a large vessel containing a brine solution (SG = 1.1, μbrine=1.07×10-3 Pa-s). Determine the appropriate coefficient of drag using Low Reynolds Drag Coefficient. Neglect the drag on the rods and the motion induced in the liquid. Estimate the minimum torque and power required to drive the mixer. only HANDWRITTEN answer needed ( NOT TYPED)