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constrain and 1D integration in 2D model
Posted Jun 3, 2014, 5:17 a.m. EDT Parameters, Variables, & Functions Version 4.4 2 Replies
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Dear all,
I am trying to build a 2D model and I got stuck with integration and constrain in Comsol. My model consists of a simple rectangle. I want to introduce a constrain K for every value y at all times:
K(y,t)=int(A(x,y,t)dx)
A is a known function.
I believe it is very simple but I cannot find a proper solution.
Please help!
I am trying to build a 2D model and I got stuck with integration and constrain in Comsol. My model consists of a simple rectangle. I want to introduce a constrain K for every value y at all times:
K(y,t)=int(A(x,y,t)dx)
A is a known function.
I believe it is very simple but I cannot find a proper solution.
Please help!
2 Replies Last Post Jun 5, 2014, 5:36 a.m. EDT
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Posted:
1 decade ago
So you just want to calculate the integral of A(x,y,t) over x for all y and t? When you say A is a known function you mean that it is a result that you have already calculated?
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Posted:
1 decade ago
Thank you for your reply. A is the variable in my study. I found this explanation:
www.comsol.com/blogs/analyze-simulation-results-projection-operators/
Now I am using Linear projection and it seems that it is working. However, I'm not happy that I have to use triangular mesh. I would like to use mapped mesh instead. Another problem is that linear projection makes my model run very slowly. Any suggestions how to deal with these problems?
Best Regards
Rokas
www.comsol.com/blogs/analyze-simulation-results-projection-operators/
Now I am using Linear projection and it seems that it is working. However, I'm not happy that I have to use triangular mesh. I would like to use mapped mesh instead. Another problem is that linear projection makes my model run very slowly. Any suggestions how to deal with these problems?
Best Regards
Rokas