Consider the thick slab of copper in Example 5.10 which is initially at a uniform temperature of

Question:

Consider the thick slab of copper in Example 5.10 which is initially at a uniform temperature of 20o0 and is suddenly exposed to large surroundings at 1000oC (instead of a prescribed heat flux).

(a) For a surface emissivity of 0.94, calculate the temperatures T(0, 120 s) and T(0.15 m, 1205) using the finite-element software FEHT.

(b) Plot the temperature histories for x = 0. 150, and 600 mm, and explain key features of your results.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Fundamentals of Heat and Mass Transfer

ISBN: 978-0471457282

6th Edition

Authors: Incropera, Dewitt, Bergman, Lavine

See More Books

Question Posted: Sep 27, 2010 11:58 PM

See More Questions

A 5-cm-diameter copper sphere is initially at a uniform temperature of 200C. It is suddenly exposed to an environment at 20C having a heat-transfer coefficient h = 28W/m2C. Using the lumped-capacity...
A 4-cm-diameter copper sphere is initially at a uniform temperature of 200C. It is suddenly exposed to a convection environment at 30C with h = 20 W/m2C. Calculate the time necessary for the center...
A copper sphere initially at a uniform temperature of 132?C is suddenly released at the bottom of a large bath of bismuth at 500?C. The sphere diameter is 1 cm and it rises through the bath at 1 m/s....
Q4. a- In a uniform electric field, what factors does the electrical potential energy depend on? b- What is the difference between APE electric and PE electric?
What information must be included in a registration statement prior to a security being offered to the public?
Consider the January transactions for Davis Consulting that were presented in Chapter 5. (Cost data have been removed from the sale transactions.) Davis uses the perpetual inventory system. Jan. 2...
A capacitor has a plate area of $0.0045 \mathrm{~m}^{2}$ and a charge of magnitude $q$ on each plate. The space between plates has been filled with a dielectric that has a bound surface charge of...
On April 1, Renato Uhrig established Renatos Travel Agency. The following transactions were completed during the month. 1. Invested $15,000 cash to start the agency. 2. Paid $600 cash for April...
For a particular Java assembler interface, it is known that the operand stack size has the following probability distribution function: 0 1 2 3 4 . 2 5 . 2 0 . 1 8 . 1 7 . 2 0 What is the Expected...
Describe the process of assigning an FC address to a node when logging on to the network for the first time.
Consider the thick slab of copper in Example 5.10, which is initially at a uniform temperature of 20oC and is suddenly exposed to a net radiant flux of 3 X 105 W/m2. Use the Finite-Difference...
Consider the composite wall of Problem 2.53. In part (d), you are asked to sketch the temperature histories at x = 0, L during the transient period between cases 2 and 3. Calculate and plot these...
Some numbers are shown in Table 13. 1. Explain where the numbers in Problems 18-22 come from. Table 13. 1 The 3,744 hands called a "full house" Royal flush 4 hands Other straight flush 36 hands Four...
Consider again the plight of Jenny, the manager at DeFlava Coffee Corporation, whose boss wants to manufacture and sell the new Decaffi Bean coffee product, perhaps using it to replace the Double...
A $2.00-\mathrm{kg}$ object is free to slide on a horizontal surface. The object is attached to a spring of spring constant $200 \mathrm{~N} / \mathrm{m}$, and the other end of the spring is...
A $0.25-\mathrm{kg}$ bob is suspended from a string that is $0.60 \mathrm{~m}$ long. When the pendulum is set into small-amplitude oscillation, the amplitude decays to half of its initial value...
You are on an airplane flying at a steady $250 \mathrm{~m} / \mathrm{s}$ at cruising altitude. At noon the pilot announces that you are passing over the center of London and exactly \(6.0...
Consider a searchlight on the ground that casts a spot on a cloud $1000 \mathrm{~m}$ overhead. If the searchlight is rotated rapidly-say, $30^{\circ}$ in $1 \mu \mathrm{s}$-how fast does the...
Your project has been running into a series of unexpected problems, and at the latest project review meeting you calculated that the current schedule performance index was .70, while the cost...
You are planning to purchase your first home five years from today. The required down payment will be $50,000. You currently have $20,000. but you plan to contribute $500 each quarter to a special...
Find expressions for the isothermal compressibility and the coefficient of thermal expansion for a fluid that is described by the van der Waals equation of state. Expressions should be in terms of...
Use the shifting Theorem to determine where f(t) = [e-(t-2) e-2]u(t-2)
Use the shifting Theorem to determine L{f(t)} where f(t) = [e-(t-2) e (t-1)]u(t-1)
A power screw is 25 mm in diameter and has a thread pitch of 5 mm. (a) Find the thread depth, the thread width, the mean and root diameters, and the lead, provided square threads are used. (b) Repeat...
There are many early players in the field of psychology. Names that have become synonymous with psychology and even popular culture. These men and women have created ideas and concepts that respected...
if you decided to pursue a career in Psychology, which one of these research areas would you choose? explain why you would choose Humanistic Psychology?
f(x)=5x+2 g(x)=3x-7 (f-g)(-2): (F) (2)

Consider the thick slab of copper in Example 5.10 which is initially at a uniform temperature of

Question:

Step by Step Answer:

KNOWN Thick slab of copper as treated in Example 59 initially at a uniform temperature is suddenly exposed to large surroundings at 1000C instead of a ...View the full answer

Fundamentals of Heat and Mass Transfer

Students also viewed these Mechanical Engineering questions