[Gambit] Very simple mesh but derformed

pipolaki

Good evening,

I'm working on a very simplified geometry of a 2D nozzle with Gambit 2.2.30.

The mesh is as simple as possible and nevertheless, it's deformed as you can see here : http://imagik.fr/view-rl/152656

I've noticed that if I add more nodes, the deformations are more and more important. So, it's possible to avoid any deformations if there is a very few number of nodes. Of course, this solution is not acceptable.

Could you give me any advice ? Do I forget something ?

Thanks in advance for any help...