Show that for the completely insulated bar (including the ends), ux(0,t) = 0, uz(L,t) 0, and...
(a) The heat flux through the faces at the ends of bar is found to be proportional to un au/an at the ends. If the bar is perfectly insulated, also at the ends x 0 and x L are adiabatic conditions, Q1 ux(0, t) = 0 0 (2'7)*n prove that the solution of the heat transfer problem above (adiabatic conditions at both ends) gives as, 2 an: nnx u(x, t) Ao t An cos n-1 where Ao and An are...
* Exercise 4: Let k,l 〉 0. The temperature of a rod insulated at the ends with an expo- nentially decreasing heat source in it satisfies the following problem: ux (0, t) u(z,0) 0 = ux (1, t), φ(z) Find the solution to this problem by writing u as a cosine series: Ao(t) u(x, t) An(t) cos and determine limt-Hou(z, t
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)...
1. Consider the insulated heat equation up = cum, 0 <r<L, t > 0 u (0,t) = u (L, t) = 0, t > 0 u(x,0) = f(2). What is the steady-state solution? 2. Solve the two-dimensional wave equation (with c=1/) on the unit square (i.e., [0, 1] x [0,1) with homogeneous Dirichlet boundary conditions and initial conditions: (2, y,0) = sin(x) sin(y) (,y,0) = sin(x). 3. Solve the following PDE: Uzr + Uyy = 0, 0<<1,0 <y < 2...
Problem 6 Find the temperature in in a laterally insulated bar of length L whose ends are also insulated, assuming the same initial temperature profile as in Problem 5. Hint: remember that if the end points are thermally insulated, there is no heat flow. Hence, the temperature gradient must vanish at the endpoints! Problem 5 Find the temperature in a laterally insulated bar of length whose ends are kept at 0° Celsius, assuming that the initial temperature distribution is in...
Problem 1 (Submit): Longitudinal vibrations of an elastic bar with zero strain and stress at both ends satisfies the following initial-boundary value problem ras ux(0, t) = uz(r,t) 0 u(z,0) = 5 cos(x), ut(z,0) = 1-cos(2r). (a) Use the method of separation of variables to solve this problem. (b) Find the D'Alembert's solution for this initial-boundary value problem and compare it to the solution you found in (a). Problem 1 (Submit): Longitudinal vibrations of an elastic bar with zero strain...
5. [8] A bar of length a cm is insulated at both ends. Find the temperature u(x,t), when 3, and u(x,0) = f(x) = x. Find and give an interpretation of the steady state solution. a =
Find the temperature u(x, t) in a rod of length L if the initial temperature is f(x) throughout and if the ends x = 0 and x = L are insulated. Solve if L = 2 and f(x) = Jx, 0<x< 1 10, 1<x< 2. ux, t) = + ŠL n = 1
a) Use the d'Alembert solution to solve au au - <r< ,t> 0, at2 48,2 ux,0) = cos 3x, u(,0) = 21 b) Consider the heat equation диди 0<x<1, t > 0, at ax? with boundary conditions uz (0,t) = 0, uz(1,t) = 0, > 0, and initial conditions u(x,0) = { 0, 2.0, 0<r < 0.5, 0.5 <<1. Use the method of separation of variables to solve the equation.
PDE questions. Please show all steps in detail. 2. Consider the initial-boundary value problem 0