You're welcome, Joerg. A picture is worth a thousand words!
Where exactly does the 0.2 ratio come from? I'm not sure. A round-off of 0.175 maybe? I tried a cube and a sphere and got the same ratio of 0.175 for Extra fine free tet mesher.
As is pointed out in the Knowledge Base article, the real ratio is going to depend on how much surface area per volume your geometry has. My intuition tells me that a sphere (lowest surface area to volume ratio of any object) is going to have the smallest node to element ratio possible.
Best regards,
Josh Thomas
AltaSim Technologies
Where exactly does the 0.2 ratio come from? I'm not sure. A round-off of 0.175 maybe? I tried a cube and a sphere and got the same ratio of 0.175 for Extra fine free tet mesher.
As is pointed out in the Knowledge Base article, the real ratio is going to depend on how much surface area per volume your geometry has. My intuition tells me that a sphere (lowest surface area to volume ratio of any object) is going to have the smallest node to element ratio possible.
Best regards,
Josh Thomas
AltaSim Technologies