Learning Forum

[Auguste Pestininkaite]

Hello,

I am working with ansys fluent with two different airfoils. I am wondering does the colour difference on mesh mean something? I am creating identical meshes for both airfoils and in the picture 1 I get a mesh with green background and in second picture with other airfoil I get normal grey colour. Does green indicate some problem?

[Rob]

Colour is semi-random, and is a visual aid for models with many volumes. 

However, you may want to review your sizing options. Why cluster mesh on the outer walls? 

[Auguste Pestininkaite]

Edge sizing is the same for both airfoils, that is why I thought it is strange. 

I made outer walls edge sizing according to the example on the internet, do not have an exact reason.

[Auguste Pestininkaite]

and also one mesh in fluent is with inlet and outlet arrows and the other (the green one) is not

[Rob]

You may want to review some of the tutorials - there's no need to use mesh around the outer boundary quite like that. 

Check what you have displayed in the two images - you're missing some edges in the second one. Displaying the interior is also a bad idea in 3d models as it can crash the computer graphics due to the number of facets being plotted. 

[Auguste Pestininkaite]

Okay, I have removed the edge sizing from walls, but it does not change the result.

It is a 2D model. But I guess ansys removes those edges automatically in the second picture, because I have named all the boundary layers in both projects. BUt thanks for your help! will try to find out why those edges are missing.