Q1 a) Engine oil at 100°C and a velocity of 0.1 m/s flows over both surfaces of a 1-m longflat plate maintained at 20°C (Figure 1). Determine the following:i. The velocity and thermal boundary layer thicknesses at the trailing edge;ii. The local heat flux and surface shear stress at the trailing edge;iii. The total drag force and heat transfer per unit width of the plate.Refer Table A.5 for engine oil thermophysical properties.8Engine oil·StU∞ = 0.1 m/sTo= 100 °CL=1mFigure 1-Ts = 20 °C TABLE A.5 Thermophysical Properties of Saturated Fluids"Saturated LiquidsTPCpμ·10²(N-s/m²)V. 106(m³/s)k. 10³(W/m .K)(K) (kg/m³) (kJ/kg. K)Engine Oil (Unused)273899.11.796385147280895.31.827217144290890.01.868145300884.11.909145310877.91.951145320871.81.993143330865.82.035141340859.92.076139350853.92.118138360847.82.161138370841.82.206137380836.02.250136390830.62.294135400825.12.337134410818.92.381133420812.12.427133430806.52.47113299.948.625.314.18.365.313.562.521.861.411.100.8740.6980.5640.47042802430112055028816196.661.741.729.722.016.913.310.68.526.945.83α 107(m²/s)0.9100.8800.8720.8590.8470.8230.8000.7790.7630.7530.7380.7230.7090.6950.6820.6750.662Pr47,00027,50012,900640034001965120579354639530023318715212510388B.10³(K-¹)0.700.700.700.700.700.700.700.700.700.700.700.700.700.700.700.700.70

Given: Length of the plate→L=1 m Temperature of the plate→Ts=20°C=293 K Temperature of the engine…

Q1 a) Engine oil at 100°C and a velocity of 0.1 m/s flows over both surfaces of a 1-m long flat plate maintained at 20°C (Figure 1). Determine the following: i. The velocity and thermal boundary layer thicknesses at the trailing edge; ii. The local heat flux and surface shear stress at the trailing edge; iii. The total drag force and heat transfer per unit width of the plate. Refer Table A.5 for engine oil thermophysical properties. 8 ·St X L=1m Engine oil U∞ = 0.1 m/s T= 100 °C Ts = 20 °C

Q1 a) Engine oil at 100°C and a velocity of 0.1 m/s flows over both surfaces of a 1-m long flat plate maintained at 20°C (Figure 1). Determine the following: i. The velocity and thermal boundary layer thicknesses at the trailing edge; ii. The local heat flux and surface shear stress at the trailing edge; iii. The total drag force and heat transfer per unit width of the plate. Refer Table A.5 for engine oil thermophysical properties. 8 ·St X L=1m Engine oil U∞ = 0.1 m/s T= 100 °C Ts = 20 °C

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: Atmospheric boundary layers can be estimated using turbulent flow approximations over a flat-plate…

A: Write down the given values along with suitable variables. u = 10 m/s k = 0.41 (Von Karman constant)…

Q: Consider two cases involving parallel flow of dry air at V = 3.5 m/s, T = 45°C, and atmospheric…

A: The thermal boundary layer is the flow zone over the surface where temperature change in the…

Q: Air at 295 K flows at 3 m/s over a flat plate at 390 K. The air properties are as follows: density…

Q: Fluid flows over a flat plate, 1.2 m long. The direction of flow is along the length of the plate…

A: Given: Flat plate length = 1.2 m Temperature of plate = 283 K Temperature of fluid = 340 K Velocity…

Q: Consider two cases involving parallel flow of dry air at V = 3.5 m/s, T = 45°C, and atmospheric…

Q: Air at standard pressure flows across a flat plate at 3m/s. The temperature surface is 50oC and the…

Q: Forced air at Too = 25°C and V = 17 m/s is used to cool electronic elements on a circuit board. One…

Q: Consider two cases involving parallel flow of dry air at V = 5 m/s, T=45°C, and atmospheric pressure…

Q: d the thickness of the boundary layer at a distance of x = 20 c

A: Re @ x =20 cm Re = ρ Vxμ = Vxν= 5 * 0.21.995 x 10-5=50125.31328 < critical reynold snumber ,…

Q: You are using hard chromium electroplating on a sphere. Air at a temperature of 18°C (P = 1 atm) and…

Q: 2. You are working for a glider manufacturer and have been asked to analyse the laminar boundary…

A: For the solution refer below images.

Q: Consider a flat plate subjected to parallel flow (top and bottom) characterized by u∞ = 40 m/s, T∞ =…

A: Given: U∞=40m/sT∞=20°CFD=0.075NTs=120°CL=0.2mw=0.2m Pr = 0.704, k = 28.0 × 10-3 W/m⋅K, Cp =1009…

Q: A long, cylindrical, electrical heating element of diameter D = 14 mm, thermal conductivity k = 251…

A: Note that the initial surface temperature is not given in the question, so I have taken the film…

Q: 1-The wind blows with velocity 0.4 m/s parallel to the both sides of a flat plate with rectangular…

A: Note: As per Bartleby guideline only 3 subparts have to be solved at the time. So, upload other…

Q: Metallic cylinder 10 mm in diameter maintained at 50 °C with the engine oil fluid in a cross flow…

Q: Air at standard pressure flows across a flat plate at 3m/s. The temperature surface is 50oC and the…

A: V= 3m/sTs = 500 CTo = 200 Cx=1 m

Q: a) Air at 30°C (density=1.165 kg/m³, kinematic viscosity = 16x10-5 m²/s) flows over a flat plate at…

A: According to question:- density of airρ=1.165kg/m3kinematic viscosity of airν=16×10-5m2/sfree stream…

Q: Air with free stream temperature of 10 C is flowing over a flat plate (1.5m long and Im wide). The…

Q: Use scale analysis to find an expression for 8/x and Nu for flow over a flat plate with a thin…

Q: Find out the local convection coefficient for a flow over a flat plate at a distance of 0.2 m from…

A: Given, Temperature of water, Tw= 60∘CVelocity of water, v= 2m/sFilm temperature, Tf= 40∘CWe should…

Q: Liquid at 23° C flows at 1.5 m/s over a smooth, sharp-edged, flat surface 10 cm in length which is…

Q: Air at 305 K flows at 4 m/s over a flat plate at 350 K. The air properties are as follows: density…

A: The objective of the question is to find out the distance from the leading edge where the flow…

Question

Q1 a) Engine oil at 100°C and a velocity of 0.1 m/s flows over both surfaces of a 1-m long
flat plate maintained at 20°C (Figure 1). Determine the following:
i. The velocity and thermal boundary layer thicknesses at the trailing edge;
ii. The local heat flux and surface shear stress at the trailing edge;
iii. The total drag force and heat transfer per unit width of the plate.
Refer Table A.5 for engine oil thermophysical properties.
8
Engine oil
·St
U∞ = 0.1 m/s
To= 100 °C
L=1m
Figure 1
-Ts = 20 °C

TABLE A.5 Thermophysical Properties of Saturated Fluids"
Saturated Liquids
T
P
Cp
μ·10²
(N-s/m²)
V. 106
(m³/s)
k. 10³
(W/m .K)
(K) (kg/m³) (kJ/kg. K)
Engine Oil (Unused)
273
899.1
1.796
385
147
280
895.3
1.827
217
144
290
890.0
1.868
145
300
884.1
1.909
145
310
877.9
1.951
145
320
871.8
1.993
143
330
865.8
2.035
141
340
859.9
2.076
139
350
853.9
2.118
138
360
847.8
2.161
138
370
841.8
2.206
137
380
836.0
2.250
136
390
830.6
2.294
135
400
825.1
2.337
134
410
818.9
2.381
133
420
812.1
2.427
133
430
806.5
2.471
132
99.9
48.6
25.3
14.1
8.36
5.31
3.56
2.52
1.86
1.41
1.10
0.874
0.698
0.564
0.470
4280
2430
1120
550
288
161
96.6
61.7
41.7
29.7
22.0
16.9
13.3
10.6
8.52
6.94
5.83
α 107
(m²/s)
0.910
0.880
0.872
0.859
0.847
0.823
0.800
0.779
0.763
0.753
0.738
0.723
0.709
0.695
0.682
0.675
0.662
Pr
47,000
27,500
12,900
6400
3400
1965
1205
793
546
395
300
233
187
152
125
103
88
B.10³
(K-¹)
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Fick’s Law of Diffusion and Mass Transfer

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

Air at standard pressure flows across a flat plate at 3m/s. The temperature surface is 50oC and the surrounding temperature is 20o Consider a point 1m away from the leading edge of the plate. See Table A-15 in Appendix 1 for properties of air. Determine the Reynold’s number and Prandtl number for this flow at the location described above. Determine the local flow boundary layer thickness. Determine the local thermal boundary layer thickness for this flow.
Consider airflow over a flat plate of length L = 1 m. a) Evaluating the thermophysical properties of air at 400 k, determine the air velocity if the B.L. flow is observed to transition from laminar to turbulent at x = 0.3 m from the leading edge of the plate. b) The local convection coefficients in the laminar and turbulent boundary layers are, respectively, hlam(x) = Clam-x-0.5 and hurb(x) = Cturb-x-0.2 where, Clam = 9.002 W/m³/2. K and Cturb 52.55 W/m¹-8. K, and x has units of m. Develop an expression for the average convection coefficient, hlam (x), as a function of distance from the leading edge, x, for the laminar region, 0 ≤ x ≤ xc. c) Develop an expression for the average convection coefficient, turb (x), as a function of distance from the leading edge, x, for the turbulent region, xc ≤ x ≤ L.. d) Using the programming software of your choice, plot the local and average convection coefficients, hx and hx, respectively, as a function of x for 0 ≤ x ≤ L. e) If the plate has a…
Find out the local convection coefficient for a flow over a flat plate at a distance of 0.2 m from the leading edge. The fluid is water at 60°C with a velocity of 2 m/s. The plate maintains a uniform temperature. Assume the film temperature to be 40°C. 64429 W/m²K Is the flat plate losing heat to or gaining heat from the water flow? Justify.
Air at 1 atm with a velocity of 4 m/s and a temperature of 50oC flows over a flat plate that is at a uniform temperature of 100oC. The plate has a length of 0.20 m and a width of 0.1 m. a) What is the average heat transfer coefficient? b) What is the heat transfer rate from plate to the air? c)What is the average friction coefficient and the drag force ? d)What is the heat transfer coefficient at x=0.15 m ?
Air at 295 K flows at 3 m/s over a flat plate at 390 K. The air properties are as follows: density =1.1 kg/m3, viscosity =18.1×10−6 Pa.s, specific heat capacity =1005 J/kgK, and thermal conductivity =0.024 W/mK. The velocity and temperature profiles are assumed to be linear, giving the local Nusselt number to be Nux = 0.289 Rex1/ 2Pr1/3. The flow will become turbulent at a Reynolds number of 5×105. Assume the width of the plate perpendicular to the air flow is 1 m. At what distance from the leading edge does the flow become turbulent? ________m What is the heat transfer at the point of transition? ___________W What is the total heat transfer along the length of the plate where the flow is laminar? __________W
Ggg
To test the heat transfer for the famous Goodyear blimp, a small-scale prototype is being tested in a wind tunnel. The prototype is a cylinder with 1.2 m diameter and 6 m long. Consider that the wind. is blowing across the cylinder (i.e., perpendicular to the cylinder axis) at a velocity of 6 miles-per-hour 1609 m). Ignore the heat transfer rate from the end areas. The wind temperature is 30°C and the surface temperature is uniform at 40°C. Considering this scenario to be dominated by forced convection, what is the convective heat transfer rate from the prototype cylinder? (1 mile 1707 w =
8- Air (p = 1.21 kg/m') flows over a thin flat plate 1 m long and 0.3 m wide. The flow is uniform at the leading edge of the plate. Assume the velocity profile in the boundary layer is linear, and the free stream velocity is 2.7 m/s. Using control volume (abcd) shown in figure, compute the mass flow rate across surface (ab). Determine the magnitude and direction of the x- component of the force required to hold plate stationary. [3.9x10 kg/s ; -3.5×10* N]
Use scale analysis to find an expression for 8/x and Nu for flow over a flat plate with a thin thermal boundary Layer. Find the expression 8/x = 4.92 Re** Consider the following NACA airfoils: 2412, 23012, 23021 a. For each of these airfoils, find the L/D ratio for angle of attack of 0, 4, 8 and 12 b. For each airfoil find the angle of maximum L/D and find the stall angle c. Find which airfoil will provide the maximum lift for any given geometry and flow conditions
Air at a temperature of 27°C (P = 1 atm) and a velocity of 12.7 m/sec flows over the top of a flat mold in order to cool it down (assume this is a flat plate). The mold has dimensions of 1.5 m wide by 0.45 m long (the 0.45 meters dimension is in the direction of the air flow); and is at a temperature of 127°C. a) Find the heat transfer rate from the mold to the air (q). b) Calculate the drag force on the mold due to the air flow.
Show every step please not Ai generated im trying to understand what im doing wrong.
I need correctly