ZuoTi.Pro
Question

4. Consider the homogeneous heat-conduction problem wr =0, u(z,0)=f(x) (15) describing the temporal evolution of the temperature u(r, t) along a constant-thermal-diffusivity rod of length L whose end at x = 0 is held at zero temperature and whose end at r L is insulated (a) Introduce a separable solution of the form u-d(x) G(t) in (15) and find the two ODEs that govern φ(x) and G(t) and homoge- neous boundary conditions on φ(x). Take λ as the separation constant (b) Obtain the function o(x). In solving for ф(x) consider sep- arately the cases λ > 0, λ 0, and λ < 0, showing that nontrivial solutions exist only for λ > 0.

engineering   Mechanical-Engineering   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

ven that つヒ 020 unut) :ated t(b.cos.주 χ-tb2. Cin h Ex) b) Rou cordiiogcash,A x; エE-λ-o z) Bzo : ut x rt)20 Irix.as ,.nof Possible fat , anl take tve a 2 s a Pss ble e.ubemt4는 u;(メ

0 0
Add a comment
Know the answer?
Add Answer to:
4. Consider the homogeneous heat-conduction problem wr =0, u(z,0)=f(x) (15) describing the temporal evolution of the...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Problem 1 (15 pts) Consider heat conduction on a slender homogeneous metal wire with constant crosssection...

    Problem 1 (15 pts) Consider heat conduction on a slender homogeneous metal wire with constant crosssection as shown in Fig.1. L- 10cm Conductivity k = 100 w/m°C. Q(x)= 100.000W/㎡. At x = 0, q = 250 W/ m2. TL = 25 oC. Governing equation: _kdTeQ (0%L) Boundary condition: dT -k Figure 1 Heat conduction on a 1-D metal wire. a. Solve for T (x) with two linear elements (X1 = 0, x2-4cm, and X3 = 10cm) ; b. Compare with...

  • Consider a uniform bar of length L having an initial temperature distribution given by f(x), 0...

    Consider a uniform bar of length L having an initial temperature distribution given by f(x), 0 < x < L. Assume that the temperature at the end x=0 is held at 0°C, while the end x=L is thermally insulated. Heat is lost from the lateral surface of the bar into a surrounding medium. The temperature u(x, t) satisfies the following partial differential equation and boundary conditions aluxx – Bu = Ut, 0<x<l, t> 0 u(0,t) = 0, uz (L, t)...

  • (a) Consider the one-dimensional heat equation for the temperature u(x, t), Ou,02u where c is the...

    (a) Consider the one-dimensional heat equation for the temperature u(x, t), Ou,02u where c is the diffusivity (i) Show that a solution of the form u(x,t)-F )G(t) satisfies the heat equation, provided that 护F and where p is a real constant (ii) Show that u(x,t) has a solution of the form (,t)A cos(pr)+ Bsin(p)le -P2e2 where A and B are constants (b) Consider heat flow in a metal rod of length L = π. The ends of the rod, at...

  • 2. Consider a thin rod of length L = π (so that 0 x-7) with a...

    2. Consider a thin rod of length L = π (so that 0 x-7) with a general internal source of heat, Q(a,t) Ot (10) subject to insulated boundary conditions The initial temperature of the bar is zero a(x, 0) = 0 (12) (a) (3pts) What is k in (10)? (b) (10pts) Assume a separable solution to the homogeneous version of the PDE and boundary conditions (10)-(11) of the form u(r, t)- o(x)G(t). Write down or find the eigenvalues λη and...

  • 1. Consider the heat flow problem on the real line, where u(x,t), t > 0 is...

    1. Consider the heat flow problem on the real line, where u(x,t), t > 0 is the temperature at point x at time t: ди 1 a2u t>O (*) at 2 ar2 u(x,0) = sin(7x) = > (a) What is the thermal diffusitivity constant ß? (b) Find the intervals of x where the temparature will increase at t = 0. (c) Sketch the graph of the temperature at t = 0. (d) On the same axes as in (c), sketch...

  • 3. Consider the following Neumann problem for the heat equation: 14(0,t)=14(L,t)=0, t>0 u(x,0)- f...

    3. Consider the following Neumann problem for the heat equation: 14(0,t)=14(L,t)=0, t>0 u(x,0)- f(x),0<x<L (a) Give a short physical interpretation of this problem. (b) Given the following initial condition, 2 *2 2 solve the initial boundary value problem for u(x,t. 3. Consider the following Neumann problem for the heat equation: 14(0,t)=14(L,t)=0, t>0 u(x,0)- f(x),0

  • please solve 17 for me thanks~~ :) ! temperature f(x) °C, where 5. f(x) = sin 0.1 x 6 f(x) = 4 - 08 |x - 5 7. fix) =x(1...

    please solve 17 for me thanks~~ :) ! temperature f(x) °C, where 5. f(x) = sin 0.1 x 6 f(x) = 4 - 08 |x - 5 7. fix) =x(10 - x) 8 Arbitrarytemperatures at ends. If the ends x = 0 and x= Lof the bar in the text are kept at constant 20. CAS PROJECT. Isotherms. Fim solutions (tempe rature s) in the squa with a 2 satisfying the followin tions. Graph isotherms. (a) u80 sin Tx on...

  • I need help with question 30d 16. y = 0 (that is, y(x) = 0 for...

    I need help with question 30d 16. y = 0 (that is, y(x) = 0 for all x, also written y(x) = 0) is a solution of (2) (not of (1) if (x) • o , called the trivial solution 17. The sum of a solution of (1) and a solution of (2) is a solution of (1). 18. The difference of two solutions of (1) is a solution of (2). 19. If yı is a solution of (1), what...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT