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1 & 5 Solve the following heat equations using Fourier series ux Ut, 0 <x <1,t>0,...
Solve heat equation for the following conditions ut = kuxx t > 0, 0 < x < ∞ u|t=0 = g(x) ux|x=0 = h(t) 2. g(x) = 1 if x < 1 and 0 if x ≥ 1 h(t) = 0; for k = 1/2
Solve the heat problem ut=uxx−cos(x), 0<x<π, ut=uxx−cos(x), 0<x<π, ux(0,t)=0, ux(π,t)=0 ux(0,t)=0, ux(π,t)=0 u(x,0)=1u(x,0)=1 u(x,t)= ?
Problem # 1 [15 Points] Consider the following PDE which describes a typical heat-flow problem PDE: ut = ↵2uxx, 0 < x < 1, 0 < t < 1 BCs: ux(0, t)=0 ux(1, t)=0 0 < t < 1 IC: u(x, 0) = sin(⇡x), 0 x 1 (a) What is your physical interpretation of the above problem? (b) Can you draw rough sketches of the solution for various values of time? (c) What about the steady-state temperature?
3. Using separation of variables to solve the heat equation, u- kuxx on the interval 0 < x< 1 with boundary conditions ux(0, t) = 0 and ux(1, t) yields the general solution, 1, 0<x < 1/2 0, 1/2 x<1 Determine the coefficients An (n = 0, 1, 2, . . .) when u(x,0) = f(x) = 3. Using separation of variables to solve the heat equation, u- kuxx on the interval 0
1. Solve fully the heat equation problem: Ut = 5ucx u(0,t) = u(1, t) = 0 u(x,0) = x – 23 (Provide all the details of separation of variables as well as the needed Fourier expansions.)
(1 point) Solve the nonhomogeneous heat problem ut = Uxx + sin(3x), 0 < x < 1, u(0,t) = 0, u1,t) = 0 u(x,0) = 2 sin(4x) u(x, t) = Steady State Solution limt-001(x, t) = ((sin(3x))/9)
(1 point) Solve the nonhomogeneous heat problem Ut Uzz + 3 sin(3.c), 0<x<1, u(0,t) = 0, u(T,t) = 0 u(2,0) sin(52) u(x, t) = Steady State Solution lim oo u(a,t) =
In the remaining exercises use multiple Fourier series to solve the BVP (double series except in the last exercise where you can use triple Fourier series). Exercise 13. Uz(0, y, t) ux(2, y, t) = 0, a(z, 0, t) = u(x, 1, t) = 0, u(z, y, 0) = 100 0 < y < 1, t > 0 0 < x < 2, t > 0 0<x<2, 0<p<1. In the remaining exercises use multiple Fourier series to solve the BVP...
(1 point) Solve the nonhomogeneous heat problem Ut = uzz + sin(4x), 0 < x < , u(0,t) = 0, u(1,t) = 0 u(x,0) = 5 sin(3x) u(x, t) = Steady State Solution lim700 u(x, t) =
Question 4. Calculate the Fourier sine series and the Fourier cosine series of the function f(x) = sin(x) on the interval [0, 1]. Hint: For the cosine series, it is easiest to use the complex exponential version of Fourier series. Question 5. Solve the following boundary value problem: Ut – 3Uzx = 0, u(0,t) = u(2,t) = 0, u(x,0) = –2? + 22 Question 6. Solve the following boundary value problem: Ut – Uxx = 0, Uz(-7,t) = uz (77,t)...