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PDE solution at mesh points
Posted Jul 30, 2009, 7:00 a.m. EDT 2 Replies
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Hi,
I am solving a PDE problem. I want to collect the solution information at the corresponding mesh points. I already know that I can get my solution in fem.sol.u and mesh points in fem.mesh.p. However, I still couldn't find a way to establish their relationship. For example, let the number of mesh points be 1000, then the solution will have size of 1000*Nt, where Nt is the number of time steps. I have already plotted the solution at some mesh points, and noticed that u(i,t) is not the expected solution at mesh point i. So, what's the correct mapping between them. I'd appreciate it if someone can help me.
Windson
I am solving a PDE problem. I want to collect the solution information at the corresponding mesh points. I already know that I can get my solution in fem.sol.u and mesh points in fem.mesh.p. However, I still couldn't find a way to establish their relationship. For example, let the number of mesh points be 1000, then the solution will have size of 1000*Nt, where Nt is the number of time steps. I have already plotted the solution at some mesh points, and noticed that u(i,t) is not the expected solution at mesh point i. So, what's the correct mapping between them. I'd appreciate it if someone can help me.
Windson
2 Replies Last Post Jul 31, 2009, 4:21 a.m. EDT
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Posted:
2 decades ago
... maybe I didn't wellexplained my problem.
I am solving a PDE using femtime function. As I read in the document, the plist property is missing in fem.sol object in this case (not like in the stationary case). In fact, I want to know what u value will be at a given time instant and specified spatial vertice. Is there any way to do that? I need your help. Thanks.
I am solving a PDE using femtime function. As I read in the document, the plist property is missing in fem.sol object in this case (not like in the stationary case). In fact, I want to know what u value will be at a given time instant and specified spatial vertice. Is there any way to do that? I need your help. Thanks.
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Posted:
2 decades ago
Hi,
Did you already look into the posteval and postinterp function?
Bye, Domenico.
Did you already look into the posteval and postinterp function?
Bye, Domenico.
... maybe I didn't wellexplained my problem.
I am solving a PDE using femtime function. As I read in the document, the plist property is missing in fem.sol object in this case (not like in the stationary case). In fact, I want to know what u value will be at a given time instant and specified spatial vertice. Is there any way to do that? I need your help. Thanks.