Learning Forum

[elisio]

Hi,

i want to evaluate the velocity variation inside a heat exchanger with a simple 2D model, but while while meshing i get this error: The Quad Mesher failed on one or more faces. I can't figure it out what it exactly means, but I have read some edge size applications to solve it. It didn't work for me. This is half model:

[Rob]

How much space is there between the tubes?

[elisio]

Tubes are tangents.

[Rob]

What shape of quad element do you expect to be created? Feel free to sketch on paper and report back.

[elisio]

i have created really small elements and it still wasn't possible. So a simple change to tetrahedral solved it.

Thanks Rob.

[Rob]

It won't be, and I suspect the skew on the tri elements is fairly high. In CFD terms I'd tend to expand the contact region a little bit to remove the tangential intercept: I'm a little surprised the CAD worked too as that's a "non manifold body" and tends to cause problems.