Q1: Find the boundary layer thickness (6) equation, the shear stress (to) and thecoefficient of drag (C₁) if the velocity distribution in the laminar boundary layer over theface of a spillway was observed to be:u7- (C)-()*+C)*.UThen calculate the boundary layer thickness and drag force if the air flows over a sharpedged flat plate 0.25m long and 0.5m wide at a velocity 1 m/s, take the air density 1.23kg/m³ and the kinematic viscosity is 1.46*10-5 m/s².

(a) To find: The expression for boundary layer thickness, the shear stress, and the coefficient of…

Q1: Find the boundary layer thickness (8) equation, the shear stress (to) and the coefficient of drag (Cp) if the velocity distribution in the laminar boundary layer over the face of a spillway was observed to be: u y y “- ()--( ) + ( ). 2 3 +3 U Then calculate the boundary layer thickness and drag force if the air flows over a sharp edged flat plate 0.25m long and 0.5m wide at a velocity 1 m/s, take the air density 1.23 kg/m³ and the kinematic viscosity is 1.46*105 m/s².

Q1: Find the boundary layer thickness (8) equation, the shear stress (to) and the coefficient of drag (Cp) if the velocity distribution in the laminar boundary layer over the face of a spillway was observed to be: u y y “- ()--( ) + ( ). 2 3 +3 U Then calculate the boundary layer thickness and drag force if the air flows over a sharp edged flat plate 0.25m long and 0.5m wide at a velocity 1 m/s, take the air density 1.23 kg/m³ and the kinematic viscosity is 1.46*105 m/s².

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

See similar textbooks

Related questions

Q: For turbulent flow modelling the Navier-Stokes equations and the k- ɛ equations are connected via…

Q: A jet engine on a test stand directs a stream of hot exhaust gasses against a vemcal wall. All of…

Q: 2. A 0.10 cm-radius sphere falling in air (T= 20°C) at a speed of 25 m/s. Determine the following:…

A: Given radius of sphere (r) =.10 cm Terminal velocity (v)=25 m/s density of Air ρ =1.2 kg/m3…

Q: A ship is 150 m long and has a wetted area of 5000 m2. If it is encrusted with barnacles, the ship…

Q: (b) A wind-tunnel experiment is performed on a small 1:5 linear-scale model of a car, in order to…

Q: You are given a drone with an average chord length of 8 in., a wingspan of 2.5 ft, and a weight of…

A: Given data: L=8 in=0.2032 mw=2.5 ft=0.762 mm=300 g=0.3 kgV=5 m/s Need to determine the lift…

Q: a)What is the impact of increasing Reynolds number on skin friction and pressure drags over an…

A: (a) The pressure drag is directly proportional to the skin coefficient. thus, pressure drag is…

Q: A fighter aircraft is to operate at 200 m/s in air at standard conditions ( = 1.2 kg/m3 ). A model…

A: GIVEN:- velocity of aircraft : V=200m/sdensity of air : ρair=1.2kg/m3length ratio of model and…

Q: When immersed in a uniform stream V, a heavy rod hingedat A will hang at Pode’s angle θ, after an…

A: Given, L = 40 cm D = 1 cm V = 35 m/s

Q: Ambient Air has a temperature of 20°C and creates a boundary layer which is beside a solid wall,…

Concept explainers

Metrology of surface finish

In general terms, the application of scientific principles in the study of measurements is known as metrology. When speaking about measurement, it could be of time, length, microstructures, grain structures, internal crystal discontinuities, surface roughness, measurements of angles, height, width, and so on. While coming to the domain of mechanical engineering, metrology is considered the science of measurements of surface finish, length, surface texture, and angles.

Question

Q1: Find the boundary layer thickness (6) equation, the shear stress (to) and the
coefficient of drag (C₁) if the velocity distribution in the laminar boundary layer over the
face of a spillway was observed to be:
u
7- (C)-()*+C)*.
U
Then calculate the boundary layer thickness and drag force if the air flows over a sharp
edged flat plate 0.25m long and 0.5m wide at a velocity 1 m/s, take the air density 1.23
kg/m³ and the kinematic viscosity is 1.46*10-5 m/s².

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 of 4.

Step 2 of 4.

Step 3 of 4.

Step 4 of 4.

Step by step

Solved in 4 steps

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

If a missile takes off vertically from sea level and leavesthe atmosphere, it has zero drag when it starts and zerodrag when it finishes. It follows that the drag must be amaximum somewhere in between. To simplify the analysis,assume a constant drag coefficient, CD, and constant verticalacceleration, a. Let the density variation be modeled by thetroposphere relation. Find an expression for thealtitude z* where the drag is a maximum. Comment onyour result.
do fast
The large block shown is x = 72 cm wide, y = 54 cm long, and z = 9.0 cm high. This block is passing through air (density of air p = 1.43 kg/m³) at a speed of v = 8.61 m/s. Find the drag force F41 acting on the block when it has the velocity vj and a drag coefficient I = 0.812. V2 Fa.1 N %3D Find the drag force F42 acting on the block when it has the velocity vz with a drag coefficient I = 0.893. F42 N Find the drag force Fa.3 acting on the block when it has the velocity vz with a drag coefficient I = 1.06. F4.3 = N EN
1. The Stokes-Oseen formula for drag force Fon a sphere of diameter D in a fluid stream of low velocity V, density p, and viscosity u is: 9T F = 3TuDV + 16PD? Is this formula dimensionally homogenous? 2. The efficiency n of a pump is defined as the (dimensionless) ratio of the power required to drive a pump: QAp input power Where Q is the volume rate of flow and Ap is the pressure rise produced by the pump. Suppose that a certain pump develops a pressure of Ibf/in? (1ft = 12 in) when its flow rate is 40 L/s (1L =0.001 m). If the input power is 16hp (1hp = 760 W), what is the efficiency?
Air at 20 °C forms a boundary layer near a solid wall, in which the velocity profile is sinusoidal (see Fig. 1-14). The boundary-layer thickness is 7 mm and the peak velocity is 9 m/s. Compute the shear stress in the boundary layer at y equal to (a) 0, (b) 3.5 mm, and (c) 7 mm. 7 mm Vmax = 9 m/s Peak Sine wave Fig. 1-14
solve show all steps and assumptions. answer all parts a-d
Fluid Mechanics Problem: A ship is 150 m long and has a wetted area of 5000 m2.If it is encrusted with barnacles, the ship requires 7000 hp to overcome friction drag when moving in seawater at 15 kn and 20oC. What is the average roughness of the barnacles? How fast would the ship move with the same power if the surface were smooth? Neglect wave drag. Note: Treat the ship hull as a flat plate. Use eq. 7.48b to find effective barnacle roughness height.Use equation (7.45) White for the drag coefficient CD = D/.5pV2A , where A is the hull (plate) area, to find the ship velocity for smooth plate.
Pls help ASAP
Drag Force on Toyota Camry & Hummer
A wind tunnel is being used to study the aerodynamics of a full-scale model rocket that is 30 cm long. Scaling for drag calculations are based on the Reynolds number. The rocket hasan expected maximum velocity of 190 km/h. What is the Reynolds number at this speed? Assume ambient air is at 20°C. The wind tunnel is capable of speeds up to 160 km/h; so an attempt is made to improve this top speed by varying the air temperature. Calculate the equivalent speed for the wind tunnel using air at 5°C and 65°C. Would replacing air with carbon dioxide provide higher equivalent speeds?
You are designing an airfoil for a new hobby RC plane. Because of your limited knowledge, you have mistakenly approximated your airfoil as an ellipse with a = 75mm and b = 12mm. Here, “a” is the depth of your wing and “b” is the thickness. Your plane travels through the air at approximately 20mph (8.9m/s). As it does so, skin friction produces a drag-induced heat of 800W on your wind, of length 1m. Properties of Air: k = 0.025 W/mK, Pr = 0.72, v = 1.847 x 10−5, u = 16.84 x 10−6, p = 1.2 kg/m3, B = 1/Tf (ideal gas), TInfinity = 25oC a) What is the Reynold’s number? Hint: “D” is taken to be the thickness for an elliptical crosssection. b) What is the Nusselt number? c) What is the convection coefficient? d) What is the average temperature of your wing? Assume an ellipse perimeter of approximately 200mm.
You are designing an airfoil for a new hobby RC plane. Because of your limited knowledge, you have mistakenly approximated your airfoil as an ellipse with a = 75mm and b = 12mm. Here, “a” is the depth of your wing and “b” is the thickness. Your plane travels through the air at approximately 20mph (8.9m/s). As it does so, skin friction produces a drag-induced heat of 800W on your wind, of length 1m. Properties of Air: k = 0.025 W/mK, Pr = 0.72, v = 1.847 x 10−5, u = 16.84 x 10−6, p = 1.2 kg/m3, B = 1/Tf (ideal gas), TInfinity = 25oC a) What is the average temperature of your wing? Assume an ellipse perimeter of approximately 200mm.