[suna]

Hello,
I have simulated 2D NACA 0018 airfoil with 1m chord length. Reynolds number is 14.26x 10^6. From check mesh option, I got the minimum face area as 4.444515e-04 and minimum volume as 1.794975e-06. Here, I have used spalart allmaras turbulence model. y+ value is taken as 30. Hence, wall spacing value is 0.0000599m.

I have two questions:
1. As I have only chord length value. then how fluent is giving face area and volume value?
2. How could I get the value of minimum grid size from Fluent?

It is urgent. Please help everyone.

[flotus1]

1. As I have only chord length value. then how fluent is giving face area and volume value?

If I am not mistaken, Fluent uses the reference length (default value 1m) to derive "3D" quantities like face area or cell volume in a 2D case.

2. How could I get the value of minimum grid size from Fluent?

The minimum linear cell size should pretty much be the first layer thickness of your prism layers. If it's not, something probably went wrong. A quick visual inspection of the mesh should be able to spot that.
Long time since I last used Fluent, so no idea if there is a convenient and non-arbitrary way to get a value for minimum linear cell size in the bulk mesh region

[suna]

The minimum linear cell size should pretty much be the first layer thickness of your prism layers. If it's not, something probably went wrong. A quick visual inspection of the mesh should be able to spot that.
Long time since I last used Fluent, so no idea if there is a convenient and non-arbitrary way to get a value for minimum linear cell size in the bulk mesh region [/QUOTE]

In that case, can we say the minimum grid size is the wall spacing distance (delta y)? I think delta y is the distance of the first node from the wall.

Kindly see the attached image.

[flotus1]

Well that's how things should be for an airfoil mesh. I can't tell if your mesh looks like that.
And I can't tell if this is what you really want when referring to "minimum grid size"