Learning Forum

[andrea.pedrioli]

Dear all,

 

I would like to know if there is anyway to increase the surface resolution for external flow application.

 

BR,

 

Andrea

[Brian Bueno]

andreape

What exactly do you mean when you say "surface resolution"?  Is the fluid flow passing through a wall or solid portion of the model?

[andrea.pedrioli]

Brian Bueno 

I mean if it's possible to increase the grid resolution over a certain surface. E.g.: increase the resolution over an airfoil to obatain good results in terms of lift/drag coefficent.

[Brian Bueno]

andreape 

Apologies for the delayed response.  The Fidelity setting in Discovery Live controls the accuracy of the results.

[andrea.pedrioli]

Brian Bueno Yes I know. You did not answer my question. Is it possible to increase the grid resolution over a certain surface? And not to play with Fidelity bar. Then I have another question. Is there a way to make it suitable for aerospace applications? (so obatain good results in terms of lift/drag coefficent)

[Brian Bueno]

andreape 

The short answer to both of these questions is no.  Discovery Live is intended as a tool for design exploration to allow for rapid testing of concepts.  As such, the focus is on speed and ease of use.

The overall level of fidelity is directly dependent on the size of the model.  If you have a specific area you wish to get more accurate results for, it is sometimes beneficial to isolate that portion of the geometry, either by performing a simulation on the individual component, or by cutting the model to isolate the specific area.

For more information on accuracy in Discovery Live, please refer to the following article, as well as the link at the end of this article concerning the relationship between GPUs and simulation results:

Discovery Verification and Benchmark Cases