The mesh sizes are given by: Ax = Ay = 3 The boundary conditions are: p(0, y)= 0; p(2, y)=y(2– y), 0

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Problem statement.
The pressure distribution on a thin rectangular membrane is
expressed by the Laplace Equation as follows:
=0
Using the second order discretization method, the above PDE can
be approximated by its discretized counterpart as:
Pi+1j + Pi-1.j + Pi,j+1 + Pij-1 –4P.j = 0
+ Pi.j+l
Where I and j are the discretization indices in the x and y
directions, respectively.
Transcribed Image Text:Problem statement. The pressure distribution on a thin rectangular membrane is expressed by the Laplace Equation as follows: =0 Using the second order discretization method, the above PDE can be approximated by its discretized counterpart as: Pi+1j + Pi-1.j + Pi,j+1 + Pij-1 –4P.j = 0 + Pi.j+l Where I and j are the discretization indices in the x and y directions, respectively.
The mesh sizes are given by:
Ar = Ay =
3
The boundary conditions are:
p(0, y)= 0; p(2.y)= y(2- y), 0<y<2
%3D
p(x,0)= 0; p(x,2)=
[x,
0 <x<1
%3D
(2-x, 1<x<2
1) Why is it that the membrane is assumed to be thin?
2) Draw the discretized domain of the rectangular membrane in
the x-y coordinate system
3) Using the boundary conditions, compute the boundary
values at all sides.
4) Set up the matrix for the discretized values
5) Compute the discretized pressure values using MATLAB or
any other software.
Transcribed Image Text:The mesh sizes are given by: Ar = Ay = 3 The boundary conditions are: p(0, y)= 0; p(2.y)= y(2- y), 0<y<2 %3D p(x,0)= 0; p(x,2)= [x, 0 <x<1 %3D (2-x, 1<x<2 1) Why is it that the membrane is assumed to be thin? 2) Draw the discretized domain of the rectangular membrane in the x-y coordinate system 3) Using the boundary conditions, compute the boundary values at all sides. 4) Set up the matrix for the discretized values 5) Compute the discretized pressure values using MATLAB or any other software.
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