Learning Forum

[fa-ri]

hello 

I'm working on flow past a 4-rotor drone.

I meshed the geometry using curvature size function and I have a tetrahedrons mesh method.

I initialized the simulation and used mesh motion for each rotating volume.

how can I fix this warning?

I would be really grateful if anyone could help me

Thank you 

With regards

[Keyur Kanade]

Did you check the mesh before starting simulation? Did it pass the check?

When you created mesh, what was the quality. Please check orthogonal quality of the mesh. The min ortho must be more than 0.1. 

Also did you use non conformal interface of sliding mesh? Did you define the axis of rotation correctly in Fluent?

Please have a look at following for sliding mesh. 

https://www.youtube.com/watch?v=93hxZuIA75I

 

Regards,

Keyur

[Keyur Kanade]

You may also want to look at following post. 

/forum/forums/topic/how-can-i-locate-and-fix-left-handed-cel/

 

Regards,

Keyur

[fa-ri]

Thank you for your response. 

I checked the orthogonal quality of the mesh. The min was 0.2004.and its non-conformal.

I checked the rotating axis.

during of flowing the tutorial I see the following errors:

I ignored the note and saw this one during processing

how can I fix this problem?

Thank you 

With regards

[Keyur Kanade]

Hello, 

You can ignore the first note of creating empty surfaces. 

For second error - can you please check if you can process it using serial mode first. 

Are you using any UDF? Are there any solid zone? Please cross check your boundary conditions. Please check boundary types. 

Regards,

Keyur

[Shahid Haqim]

I am facing the same problem. Hoping someone would guide to resolve this issue. The max skewness is below 0.9 and min ortho quality is above 0.1