Problem 4. Air at STP flows over the top and bottom of a flat plate that is L₁ = 0.8 m by L2 = 0.4 m at avelocity of U = 5.0 m/s. Determine the shear stress at the end of the plate and the total drag when the flow isaligned with (a) L1 and (b) L2. (c) Briefly explain why there is a difference in your answers to parts (a) and (b)even though the area is the same.

Answered: Image /qna-images/answer/a3d0bfd8-6271-410a-8023-b52ee970705c.jpg

Answered: Problem 4. Air at STP flows over the…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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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
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
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2. Air at 40 °C moves over a long flat plate with a uniform free stream velocity of U = 900 m/s. Assume the boundary layer formed above the surface of the plate starts at the tip of the leading edge and the velocity profile inside the boundary layer has power-law form as Re, <107 8 10' < Re, <10* 7 - (). for u Sx
Need Solution through 15min
A helicopter during a test has its four blades turning at 89 rpm with the blades oriented parallel to the plane of rotation, where each blade is 3.5 m long, and the average width is 200 mm, Transition is at a Reynolds number on 10^ 6. Find out what power is needed to maintain this rotation of the four blades? Consider only skin drag. Take air density = 1.225kg/m^3 and air viscosity = 1.78 X 10E-5 Pa.s %3D
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