How to change the Element Order

Main Forum Old-Forum - do not post here
1

Hi

How can I change the element order? I tried: “mesh.SetElementOrder(5)” but SetElementOrder needs the ElementIds. How can I specify them?

Is it possible to increase just the order of the elements which are used for the holes?

The jupyter sheet is attached.

Kind regards

Michael

Attachment: ElementOrder.ipynb

2

Hi,

would you like to have a high order approximation of the circles or a higher polynomial degree in your finite element space?
“SetElementOrder” sets the polynomial order of your finite element.

I just saw a problem with your geometry. If the holes touch the box, the meshing does not work properly.

Best regards,

Christoph

3

Hi,

Thank you for the fast response. I will reduce the hole diameter so that the holes don’t touch the outer geometry.

I would like to get a better representation of the form of the holes without needing more elements. How can this be achieved?

kind regards,

Michael

4

Hi,

if you have a NGSolve mesh, you can call the “Curve” function.

myGeo = MyGeometry(0.02,90,0.02,8,8,0.2,0.5,1.1,0.04)
myGeo.createEquidistantGeometry()
myGeo.mesh.Curve(5)

The argument defines the order of the splines, which are used to approximate the curved geometry.

Best regards,
Christoph

5

Merci