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Convergence of a drying model

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Old   August 13, 2020, 16:16
Default Convergence of a drying model
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Robert
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Dear All,

I have developed a model, which will predict a drying rate of a bunch of tablets. A bunch of tablets is represented by the porous medium. The drying aspect is modelled with use of the DDPM.
Tablets are exposed to an airflow of a known velocity.
I have ticked double precision option.

I get the divergence.
I attach a few screen shots.

I have reviewed several posts on this forum dedicated to the convergence aspect.
I understand that there may be a lot of reasons of divergence.

I try decrease relief factors (pressure, momentum, etc.). I have tried F-cycle instead of V-cycle, BCGSTAB.

Perhaps you would have some suggestions?


Thank you.
Regards
Attached Images
File Type: jpg Divergence 22.JPG (163.8 KB, 5 views)
File Type: jpg Divergence 11.jpg (101.3 KB, 5 views)
File Type: jpg Divergence 33.JPG (147.3 KB, 3 views)
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Old   April 22, 2022, 04:29
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hossein
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Quote:
Originally Posted by RobertW View Post
Dear All,

I have developed a model, which will predict a drying rate of a bunch of tablets. A bunch of tablets is represented by the porous medium. The drying aspect is modelled with use of the DDPM.
Tablets are exposed to an airflow of a known velocity.
I have ticked double precision option.

I get the divergence.
I attach a few screen shots.

I have reviewed several posts on this forum dedicated to the convergence aspect.
I understand that there may be a lot of reasons of divergence.

I try decrease relief factors (pressure, momentum, etc.). I have tried F-cycle instead of V-cycle, BCGSTAB.

Perhaps you would have some suggestions?


Thank you.
Regards
Hello, did you solve this problem? Please help me
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Old   April 22, 2022, 04:30
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hossein
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Originally Posted by hossein76 View Post
Hello, did you solve this problem? Please help me
h.mrad13766@gmail.com
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