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How to solve a ODE or PDE equation?
Posted 19 avr. 2013, 05:36 UTC−4 Version 4.3a 2 Replies
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Hi~
I try to use COMSOL to solve the mathematical problem.
I have a PDE equation in attachment.
How could I use COMSOL to solve it?
Thank you~
I try to use COMSOL to solve the mathematical problem.
I have a PDE equation in attachment.
How could I use COMSOL to solve it?
Thank you~
Attachments:
2 Replies Last Post 21 avr. 2013, 19:59 UTC−4
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Posted:
1 decade ago
Hi,
1) Creat a new model: Space Dimension 2D, Add Physics-->Mathematics-->Classical PDEs-->Laplace Equiation, Stationary
2)If i understud correctly build a rectangle of Heigth=1 and With=Pi
3)Go to Laplace Equation on the Model Builder, rigth mouse button and creat 2 Dirichlet Boundary Conditions,
4)In the first one select the three boudaries with u=zero
5)In the second one select the lower boundary of the rectangle (the one where the dirichlet condition is non zero) and change the value of the r (for default is set to zero) to 4*cos(6*x/1[m])+ cos(7*x/1[m])
Please let me know if this helps you.
Regards
1) Creat a new model: Space Dimension 2D, Add Physics-->Mathematics-->Classical PDEs-->Laplace Equiation, Stationary
2)If i understud correctly build a rectangle of Heigth=1 and With=Pi
3)Go to Laplace Equation on the Model Builder, rigth mouse button and creat 2 Dirichlet Boundary Conditions,
4)In the first one select the three boudaries with u=zero
5)In the second one select the lower boundary of the rectangle (the one where the dirichlet condition is non zero) and change the value of the r (for default is set to zero) to 4*cos(6*x/1[m])+ cos(7*x/1[m])
Please let me know if this helps you.
Regards
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Posted:
1 decade ago
Thanks to Agus~
I upload my file in attachment,.
But how can I verify the result correct with the mathematical answer?
The mathematical answer is also in attachment.
Thank you for help.
I upload my file in attachment,.
But how can I verify the result correct with the mathematical answer?
The mathematical answer is also in attachment.
Thank you for help.