Answered: Q/ Prove that the drag force expression…

Q/ Prove that the drag force expression for the boundary layer with the velocity profile Sin ) is given by the: FD = oi6588U*L %3D Rei

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

Related questions

Q: An airplane has a rectangular wing with a chord length of 8 ft. If the airplane is flying at 200…

A: Given, Chord length, L=8ft Velocity, V=200 knots=337.56 ft/s Kinematic viscosity at 20000 ft,…

Q: airfoil. The weight of the airplane is 7.5 x 10° N. If the density altitude is 3 km and the flight…

Q: Water flows at a velocity of 1.2 m/s over a flat plate 1.2 m long. Assume 1/7th power law and…

Q: 2. Integrate the pressure P and shear stress Tr9 over the entire surface of the sphere and obtain…

Q: 5.10 In a laminar boundary layer, the shear stress distribution is given as t= t (1- 7 where n =…

Q: The boundary layer formed as turbulent around the sphere is when ReD = 2.5*10^5 (a) Golf…

A: Re= 2.5×105Golf ball diameter, Dg= 43 mm= 0.043 mSoccer ball diameter, Ds= 222 mm= 0.222 m Note:…

Q: 21. Your plane has a lift to drag ratio ofn = 14.4 at a 10° angle of attack and mass of 3500kg. The…

A: Given Data The angle for the lift force is: θA=10° The mass of the wing is: m=3500 kg The lift…

Q: Two large fixed parallel planes are 240 mm apart. The space between the surfaces is filled with oil…

A: Given:Distance between plates=240 mm or 0.24 moil viscosity=0.81 N-s/m2Plate area=0.5 m2velocity=0.6…

Q: d determine the boundary layer thickness and re the values with values calculated using laminar flo

Q: Air at 15 °C flows at V = 5 m/s over a flat plate of length L= 6 m and width W = 2 m. Calculate the…

A: T0=15°C v=5 msecL=6 m w=2 m Surface of plate is smooth ρ=1.225 kgm3 and μ=1.81×10-5 Kgm-sec at…

Q: Determine the drag force exerted on the flat plate of 4 m long when air is flowing over it with a…

A: The answer is given below

Q: 400 200 100 Determine the form drag experiences by a truck traveling at a speed of 80 miles/hr with…

A: Reynold number is calculated. Which gives Cd from graph Drag force is subsequently calculated.…

Q: A spherical raindrop that is D= 1/8 inch in diameter falls through the air at sea-level. a) If the…

A: From the table according to the L/D ratio: The terminal velocity of the rain drop can be calculated…

Q: Velocity profile inside boundary layer is given as, U sin 2 8 U. Find the value of

Q: The velocity profile for boundary layer over a 73 1 y 3 Ux flat plate is given by, u. y 2 8x 2 8x…

A: The solution is given below

Q: A boat is equipped with two retractable rudders of width 0.75m and length 1m. The speed of the boat…

A: (3.1) Write the given data. A=lb=1 m0.75 m=0.75 m2v=120 km/h=120518=33.33 m/s Calculate the…

Q: Kindly give me both right solutions with clear calculations The drag polar of a glider is given by…

Q: 1- Calculate the displacement thickness and momentum thickness for the following velocity profiles…

Q: Which one of the following is not a flow region where the boundary layer approximation may be…

A: In the flows mentioned above, (a) The jet has a boundary layer in its circumferential region. There…

Q: Prove that the pressure 'p' is independent of the transverse coordinate 'y' in the boundary layer…

A: The basic property of a static fluid is pressure. For a static fluid, as shown by the following…

Q: The air flows past a 1m diameter disk oriented normal to upstream flow at 6.8m/s. The pressure…

Q: 3. Airfoil wings that redirect air to cause a downforce , it is also cause a) Pressure drag b)skin…

A: Its answer is c) induced drag.

Q: Consider the isentropic flow over an airfoil. The freestream conditionscorrespond to a standard…

A: Given: The free stream pressure and temperature are P∞ and T∞. At the standard altitude10,000 ft…

Q: 4.1 Assuming that the wing on an air- lane is behaving like a flat plate, what is the ength of the…

A: given:altitude=500ftμ=2.048×10-3slug/ft3

Q: A stationary sphere in water moving at a velocity of 2.3 m/s experiences a drag of 6N. Another…

A: Given data,

Q: The sum of the components of the pressure and wall shear forces in the direction normal to the flow…

A: Whenever a body moves through the fluid, it is acted upon by the two forces, one is pressure forces,…

Q: The air with temperature T. 20°C, speed U. = 20 m/s flows over the plate with length L = 1 m, width…

Q: 1- Determine the velocity distribution in the velocity boundary layer assuming second degree…

A: As per our guidelines, experts can provide solution to only one problem in case of multiple…

Q: A flat thin plate 0.25 m² area moves through the oil at a velocity of 0.3 m / s. Calculate the drag…

Q: from

Q: 3- Assuming that the velocity distribution in the laminar boundary layer: U sin 28 Determine the…

Q: Considering friction forces and the indicated motion of the belt, how are belt Tensions TA and TB…

Q: A wheel tractor has a 200HP engine.If the weight of the wheel tractor is 30 tons and the weight on…

Q: A light aircraft is flying at an altitude of 1000 m. If the wing chord is 1.5 m, and the freestream…

A: Given: Altitude of the aircraft→h=1000 m At this altitude: Density of the air→ρ=1.11 Kg/m3 And…

Q: The large block shown is x = 72 cm wide, y = 54 cm long, V3 and z = 9.0 cm high. This block is…

A: Given: x=72 cm y=54 cm z = 9 cm v=7.98m/s ρ - 1.43 kg/m3 To find: Drag force

Q: Q1: Find the boundary layer thickness (8) equation, the shear stress (to) and the coefficient of…

Q: A supertanker is 300 m long, 80 m wide (beam), and 25 m deep (draft). The ship mov at 14 knots…

Q: 1- Calculate the displacement thickness and momentum thickness for the following velocity profiles…

Q: Water flows at a velocity of 1.2 m/s over a flat plate 1.2 m long. Assume 1/7th power law and…

A: Due to no slip condition at the hydrofoil surface, there develops a region where viscous effect…

Q: 2. An airplane is flying at a density altitude of 15,000 ft with an ambient temp. of -39°F. If the…

Q: A wheel tractor has a 200HP engine.if it is operating at an altitute of 1000m above sea level, at an…

Q: 8. A flat plate ( 1.5 m ) long and ( 1.5 m ) wide is towed in water (p = 1000 kg/m and v=1.31 * 10 “…

A: The given values are length l=1.5m, width b=1.5m, density ρ=1000kg/m3 , kinematic viscosity…

Q: a smooth flat plate of length 5 m and width 2 m is moving with a velocity of 4 m/s in stationary air…

A: L= 5 m b=2 m v=4 msecρ=1.25kgm3ν=1.5×10-5 m2sec Thickness of the boundary δ in case of turbulant…

Q: Prob.7. A smooth flat plate of length 5 m and width 2 m is moving with a velocity of 4 m/s in…

A: Given data- The length of the plate is L = 5 m. The width of the plate is w = 2 m. The velocity of…

Q: Air flows over a flat plat with a velocity of 60 m/s. Calculate boundary-layer thickness at a…

Question

Transcribed Image Text:Q/ Prove that the drag force expression for the boundary layer with the velocity profile -Sin ) is given by the: EoD= 0,6588U?L %3D

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

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.
Find the drag force of the flow over aplate with a.v.p. of Sinπy/2δ ? [ Take the length and width of the plate ar: L and b ] Ans: FD= 0.658 ρv² bL / ReL⁰٠⁵
The boundary layer formed as turbulent around the sphere is when ReD = 2.5*10^5 (a) Golf ball(D=43mm) (b)Soccer ball(D=222mm) How fast does the ball have to be in order for a turbulent boundary layer to form around a ball? Assume standard atmospheric pressure.
An aircraft is flying in level flight at a speed of 200 km / hr through air density 1.2 kg/ m ^2 and viscosity 1.6 × 10^-5 Ns/m^2. The lift coeffient is 0.4 and the mass of the aircraft is 800 kg. Calculate the effective lift area of the aircraft.
A vertical air stream flowing at a velocity of 100 m/s supports a ball of 60 mm in diameter. Taking the density of air as 1.2 kg/m³ and kinematic viscosity as 1.6 stokes, the weight of the ball that is supported is (if coefficient of drag C= 0.8)
Q1/ Boeing 737 - 60 flies at altitude 15000m above sea level with speed 85 m/s and total drag coefficient equal to ( 5) . Find the drag force at this fly condition. Given data IR=287,g=9.81 m/s2 , rho O=0.3648 kg/m2 and wing area = 120m^ ^ 2^ *
7. A flat plate has a length of 40 cm and width of 1 m. Air, at pressure of 2 atm,temperature of 57 C, and velocity of 3 m/s flows over the plate. Find the thicknessof the boundary layer at x = L.
For flow over a smooth plate, what approximately is the maximum length of the boundary layer if V_o = 9.0 m/s in the irrational uniform flow and the fluid is air? Water?
Which one of the following is not a flow region where the boundary layer approximation may be appropriate? (a) Jet (b) Inviscid region (c) Wake (d ) Mixing layer (e) Thin region near a solid wall
A hydraulic lift shaft of 500mm dia moves in a cylindrical sleeve the length of engagement being 2m. The interface is filled with oil of kinematic viscosity of 2.4Poise and density of 888kg/m3 . The drag resistance when the shaft moves at 0.2m/s is 267.81N. Determine the ID of the cylinder.
Evaluate the boundary-layer shape factor, H.
In your own words, list at least three “red flags” to look out for when performing laminar boundary layer calculations.