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Inlet velocity becomes entire domain velocity

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Old   July 4, 2023, 12:34
Default Inlet velocity becomes entire domain velocity
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Tarık Yaman
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Hello,


I was working on 2-way fsi analysis. I am trying to simulate the model in figure-1 (google drive). I wanted to validate the results in section 3.1.2 of the article titled "Computation of fluid–structure interaction on lightweight structures".

However, I am getting an error due to a sudden pressure effect on the plate.

Looking at the contours, I thought it would be because the inlet velocity was suddenly the velocity of the entire domain.

To eliminate this situation, I set the inlet velocity to 0 for the first 5 time steps and 1 m/s for the next steps.

I set up another analysis to try the results and again faced the same issue.


I want the flow to travel a distance that will be proportional to the velocity value from the inlet to the outlet. For example, if my inlet velocity is 1m/s, after 0.1 second I want the flow to move 0.1 meters. Is this possible?


You can access all settings and contour pictures from the link : https://drive.google.com/drive/folde...ER?usp=sharing


Thanks for be interested.
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initialization, inlet velocity, patch, transient

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