Inlets and outlet problems

[FrankTheTank]

Hello, I just finished a simulation and the inlets and outlets spike up and down every rapidly. I was wondering if this causes any inaccuracy in the simulation. If it does do you know how to fix this rapid spiking and decline. The forces aren’t quite different between the two meshes(regular and hex dominant mesh) except for the total drag force that is the y axis pressure + viscous force. Please let me know how to fix this and if it affects the simulation accuracy.

project link(please look in experiential mesh run(either one)) - https://www.simscale.com/workbench/?pid=3989353462007021982&mi=spec%3A20aee6fb-5fb7-460d-9b5c-c78a935c6efc%2Cservice%3AMESHING%2Cstrategy%3A52&sh=27

thank you for your help, time, and effort👍,
Frank Lucci

[tsite]

Hi Frank!

If you wish to check convergence, make sure to monitor the “Residuals” tab, and not the rest of them listed

However, can you also send me the link to the project please, so I can check?

Best regards,
Fillia

[FrankTheTank]

here is the project link - https://www.simscale.com/workbench/?pid=3989353462007021982&mi=spec%3A20aee6fb-5fb7-460d-9b5c-c78a935c6efc%2Cservice%3AMESHING%2Cstrategy%3A52&sh=27

i think I put it above too

[tsite]

Thank you for sharing!

This seems to be a meshing issue, I tried with the default settings for the standard mesher -same settings-, and here are the results:

SimScale Login

Best regards,
Fillia