A square duct having D=23-cm and surface temperature T=70°C is located horizontally in an attic space with ambient temperature T-11°C. If the duct is subjected to ait flow of U=1.4-m/s, find the Nusselt number for the external flow over the duct as shown in the figure below.

A square duct having D=23-cm and surface temperature T=70°C is located horizontally in an attic space with ambient temperature T-11°C. If the duct is subjected to ait flow of U=1.4-m/s, find the Nusselt number for the external flow over the duct as shown in the figure below.

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: Consider a pipe carrying water at a temperature of 60°F. The pipe diameter is 4 inches and the water…

Q: A centrifugal pump is used to pump the water at its temperature in a reservoir with the free water…

Q: Resolving of Example (1-3) Two reservoirs with a difference in elevation of 15 m are connected by…

A: Length and diameter of the pipes:-Pipe 1:- Length (L1 ) = 300 m, Diameter (D1) = 0.3 mPipe 2:-…

Q: what is the increase in the temperature of water a

A: Diameter d = 0.05 mw = 2 ml = 5 mv = 2*10-4 m3/sS = 500 W/m2Calculate the area,A = l*wA = 2*5A = 10…

Q: A flat plate measuring 60cm by 60cm is exposed on one side to 40°C water flowing at 3.5 m/s parallel…

A: Density of water = 1000 kg /m3 K= 0.6294 w/(m-k) viscosity = .658*10-6 m2/ s

Q: Determine the average velocity and temperature for the following velocity and temperature profile…

A: Formula involving integration to get average velocity and temperature are calculated to arrive the…

Q: A liquid flows through a 200 m long pipe with a rectangular cross section with 0.6mX0.3m dimensions.…

A: Length of the pipe, L=200m Cross-sectional area of rectangular section, A=0.6m*0.3m=0.18m2 The…

Q: A 3 cm diameter and 50 cm long bar greased with lubricating oil of 5 x 10-4 m kinematic viscosity…

A: Given data: The diameter of the bar is d1=3 cm=0.03 m The length of the bar is L=50 cm=0.5 m The…

Q: e- Water at 12 °C is to be heated to 60 °C by passing it over a bundle of 3-m-long, 2-cm-diameter…

Q: A7 To a 5ft long ½” ID pipe that is maintained at a uniform temperature of 150ºF oil enters at 70ºF…

A: Given: The diameter of the pipe, d = ½ in = 0.04166 ft The length of the pipe, L = 5 ft The…

Q: A liquid is entering a 10 m long pipe of 0.2 m diameter at 25°C with an average velocity of 0.02…

Q: Water flows at 5m/s is passed through a tube of 2.5 cm diameter, it is found to be heated from…

Q: Q1 / Show that velocity profile for fully developed laminar flow on an inclined plane, shown in…

A: Apply continuity equation and navier stokes equation to solve this problem

Q: An coconut oil (considered as viscous fluid) must be pumped between two buildings in an…

A: Given data: The oil flow rate is m = 20 kg/s. The liquid will be heated to temperature of To = 40…

Q: What is the function of V-cone flow element and manifold pressure measuring devices, where equipment…

Q: Question no.9 A Space of 2omm between two parallel plates is filled with Castor oil at a temp of…

Q: Q:- Prove that the angle of inclination of two fixed parallel plate as shown in fig, so that laminar…

Q: na straight circular pipe, e, is given by the expressi

Q: Q1 What is the Reynolds number? How is it defined for (a) flow in a circular pipe and (b) flow over…

A: This question is based on the concept of fluid mechanics.

Q: fresh waterC and Seucw eter Mocotng in paralel horizontalpipelines are connected te each other m…

Q: flow? How is flow described using the

A: Flow - The steady, continuous movement of something (matter) is called flow. using Reynold's number…

Q: Engine oil enters a circular tube D=6-cm in diameter and L=29-m in length. If the flow rate and…

Q: ition Reynolds number for flow in a circular pipe is Re=2300. For flow through a 5-cm-diameter pipe,…

A: Givenreynold number Re=2300diameter of pipe d=5cm=0.05mtemperature T=20oCthe Kinematic Viscosity of…

Q: s given that Grashof nu

Q: Oil is transported in a horizontal circular pipe with diameter 10 cm and volume flow rate of 0.003…

Q: 3-Air flows over the flat plate at velocity 3 m/s and ambint temperature 15 C.The plate is maintaned…

Q: Discuss the factors that influence pressure drop due to friction both for laminar flow and for…

A: This question is based on the concept of pressure drop in pipes.

Q: Consider the steady laminar flow of water at 25°C through the piping system shown below. (a) Derive…

Q: Someone claims that in the fully developed laminar flow region, the velocity profile change in the…

A: No. I do not agree as the velocity in fully developed laminar region remains unchanged.

Q: determine the type of flow.

A: determine the type of flow.

Q: Air with a pressure of 1 atm and a temperature of 285 K flows in a duct rectangular shape with a…

A: Given, Pressure, P=1atmTemperature, T=285KMass flow rate, m=0.1kg/sDuct size=75mm×150mmLength of…

Q: (b) To utilise the usage of Bernoulli equation in this situation, state the assumptions needed.

A: As mentioned in the question that you want assumptions for usage of bernollis equation. here give…

Q: Is Reynolds number specified as a flow property? (True or False)

A: Reynolds number: The ratio of inertia force to the viscous force is known as Reynolds number.…

Q: Lated to Reynolds numb Re & Re (C

Q: A piston confined in a tube is suddenly accelerated to a velocity at ( m/s) which causes a 72 normal…

Question

A square duct having D=23-cm and surface temperature T=70°C is
located horizontally in an attic space with ambient temperature T=11°C.
If the duct is subjected to ait flow of U=1.4-m/s, find the Nusselt number for
the external flow over the duct as shown in the figure below.
U
air
T

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 by step

Solved in 2 steps with 2 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

When calculating the viscous shear of a Newtonian fluid does the direction of velocity gradient matter (i.e. is there a difference in calculation if the velocity profile has a negative slope vs. a postitive slope)?
Asap,
please answer asap
A liquid is entering a 10 m long pipe of 0.2 m diameter at 25°C with an average velocity of 0.02 m/s. The pipe is kept at a constant surface temperature of 40°C. Assume the flow is both hydrodynamically and thermally fully-developed in the pipe. Find out the outlet temperature. Justify if the assumption of fully-developed flow is appropriate. The properties of the fluid can be assumed constant with following values Density: 484.2 kg/m³; Specific heat capacity: 2802 J/kg.K; Thermal conductivity: 0.0904 W/m.K; Dynamic viscosity: 9.197 × 10-5 kg/m.s; Prandtl number: 2.85. 29.3 °C
Water flows along a tube of diameter d = 6 mm with a velocity w = 0.4 m/s. The temperature of the tube wall t = 50°C. What should the length of the tube be to ensure a water outlet temperature tr2 = 20°C at a water inlet temperature twi = 10°C?
Water flow in steel pipe at a temperature of 50o C as shown in the figure. The pipe is wrapped with thermal isolation. Air is flowing over the pipe at a temperature of -5o C and a speed of 3 m/sec. It is known that 1kWh costs 0.05$ Find the daily cost of the heat losses per meter without the pipe isolation? What is the daily cost saving when using the isolation?
A getter screen consists of a cylinder of length l = 0.3m, diameter d=0.25m and its circular based plate. The getter screen is cooled with liquid nitrogen and coated completely with deposited titanium providing a constantly fresh surface. Sticking probability s=1 for N2 and mean thermal velocity = 470m/s. Find the pumping speed.
A square duct having D=17-cm and surface temperature T=66°C is located horizontally in an attic space with ambient temperature T=14°C. If the duct is subjected to ait flow of U=1.0-m/s, find the Nusselt number for the external flow over the duct as shown in the figure below. U air T,
A fluid with a constant density of 961 kg/m3 and a constant viscosity of 1.419×10-3 Kg/m.s is flowing over a flat plate at a stream free velocity of 0.87 m/s. If the plate has a length of 2 m, answer the following: 1.What is Reynolds number at a point that is (1/4)L down the entrance? 2.Is the flow laminar or turbulent? 3.Calculate the thickness of the boundary layer in mm at (1/4)L down the entrance 4.Calculate the drag coefficient at (1/4)L down the entrance