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Need some tip/tricks to improve solution accuracy-Deformed mesh (ALE) Model
Posted 25 mars 2011, 02:29 UTC−4 Mesh 2 Replies
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Hi all,
I am working with ALE-moving mesh along with two Pde's. I am getting 1-3% mass balance error right now and i want to improve the solution accuracy. My model consists of several subdomains with different order of magnitudes (two domains are 3 order smaller in magnitude when compared to the others).
I used different kind of meshing (interactive meshing where i used refined mesh in thin layers and coarse mesh in thick layers) and a good (refined) global mesh but nothing is really improving accuracy. I used smaller values for relative tolerance and absolute tolerance to solve equations accurately but still i am unable minimize error percentage.
So, I would be very happy to hear some steps/tips to improve my solution accuracy...
Thank you,
Manohar
I am working with ALE-moving mesh along with two Pde's. I am getting 1-3% mass balance error right now and i want to improve the solution accuracy. My model consists of several subdomains with different order of magnitudes (two domains are 3 order smaller in magnitude when compared to the others).
I used different kind of meshing (interactive meshing where i used refined mesh in thin layers and coarse mesh in thick layers) and a good (refined) global mesh but nothing is really improving accuracy. I used smaller values for relative tolerance and absolute tolerance to solve equations accurately but still i am unable minimize error percentage.
So, I would be very happy to hear some steps/tips to improve my solution accuracy...
Thank you,
Manohar
2 Replies Last Post 30 mars 2011, 17:56 UTC−4
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Posted:
1 decade ago
Hi all,
I am working with ALE-moving mesh along with two Pde's. I am getting 1-3% mass balance error right now and i want to improve the solution accuracy. My model consists of several subdomains with different order of magnitudes (two domains are 3 order smaller in magnitude when compared to the others).
I used different kind of meshing (interactive meshing where i used refined mesh in thin layers and coarse mesh in thick layers) and a good (refined) global mesh but nothing is really improving accuracy. I used smaller values for relative tolerance and absolute tolerance to solve equations accurately but still i am unable minimize error percentage.
So, I would be very happy to hear some steps/tips to improve my solution accuracy...
Thank you,
Manohar
How do you calculate this "1-3% mass balance error"?
Danial
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Comsol 4.1
Ubuntu 10.04.1
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Posted:
1 decade ago
Using Subdomain integration feature in ALE moving frame...