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Fluid Structure Interaction

Posted Jun 11, 2020, 11:55 p.m. EDT Structural & Acoustics, Fluid & Heat, Structural Mechanics Version 5.5 4 Replies

Mugdha Patel
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Im trying to model a fluid entering the eye. This is modelled as a fluid being injected between 2 layers. There is an inlet but there is not supposed to be an outlet as the fluid should enter in and disperse between the layers. My model fails to reach consistent values, however. Any help would be very much appreciated.

Thank you

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4 Replies Last Post Jun 14, 2020, 1:24 p.m. EDT
Aniket Jayawant
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Posted: 5 years ago Jun 13, 2020, 11:52 a.m. EDT

Hello Mugdha, You were missing a pressure point constant which I have added. Also, your values on the inlet should be either mass controlled or velocity controlled. Use really small values as I have done as the volume inside the computation exceeds the pressure limit resulting in chocking the system. The time settings were also too large; try reducung them a little. Good Luck

Hello Mugdha, You were missing a pressure point constant which I have added. Also, your values on the inlet should be either mass controlled or velocity controlled. Use really small values as I have done as the volume inside the computation exceeds the pressure limit resulting in chocking the system. The time settings were also too large; try reducung them a little. Good Luck
Mugdha Patel
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Posted: 5 years ago Jun 13, 2020, 12:13 p.m. EDT

Hello Mugdha, You were missing a pressure point constant which I have added. Also, your values on the inlet should be either mass controlled or velocity controlled. Use really small values as I have done as the volume inside the computation exceeds the pressure limit resulting in chocking the system. The time settings were also too large; try reducung them a little. Good Luck

Thank you so much for the feedback! I really appreciate it. I will try implementing these solutions.

>Hello Mugdha, >You were missing a pressure point constant which I have added. >Also, your values on the inlet should be either mass controlled or velocity controlled. >Use really small values as I have done as the volume inside the computation exceeds the pressure limit resulting in chocking the system. >The time settings were also too large; try reducung them a little. >Good Luck Thank you so much for the feedback! I really appreciate it. I will try implementing these solutions.
Aniket Jayawant
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Posted: 5 years ago Jun 13, 2020, 12:32 p.m. EDT

Here you go.

Here you go.

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Mugdha Patel
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Posted: 5 years ago Jun 14, 2020, 1:24 p.m. EDT

With your model I am getting this error: Recoverable error in residual, but solver could not recover. Time: 0.0064000000000000003 s. Last time step is not converged.

Were you able to get a solution?

I will update if I find a solution. Thank you

With your model I am getting this error: Recoverable error in residual, but solver could not recover. Time: 0.0064000000000000003 s. Last time step is not converged. Were you able to get a solution? I will update if I find a solution. Thank you

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