How to draw an ellipsoid shape in HFSS?

[imtiaz369]

How can I draw a 3d ellipse or ellipsoid shape in hfss?

For example:

 

[PlanarMetamaterials]

Draw a sphere and scale it by different amounts along the various axes?

 

[imtiaz369]

Draw a sphere and scale it by different amounts along the various axes?

not working

 

[D.A.(Tony)Stewart]

What does search engine say?

• Right-click on the "Project Manager" and choose "Insert," then select "3D Modeler."
• In the 3D Modeler window, select the "Draw" menu and choose "Primitive." Then select "Ellipsoid

 

[imtiaz369]

What does search engine say?

• Right-click on the "Project Manager" and choose "Insert," then select "3D Modeler."
• In the 3D Modeler window, select the "Draw" menu and choose "Primitive." Then select "Ellipsoid

don't believe the search engine always. there is no ellipsoid function there.

 

[D.A.(Tony)Stewart]

she replies " Right-click on "3D Modeler" in the Project Manager, select "Draw," and then choose "Cylinder."
then "Edit," and select "Create Sheet Body." This essentially turns the cylinder into a sheet, Use the "Transform" operation to scale the sheet in one or more directions, effectively transforming it into an ellipsoid. Right-click on the sheet, select "Edit," and choose "Transform." Adjust the scaling factors to achieve the desired ellipsoid shape.

 

[volker@muehlhaus]

This is nonsense. If you start from a cylinder, you will never get an ellisoid, no matter what z scaling factor you try.

--- Updated Jan 17, 2024 ---

not working

Why not? Here is a post where that method seems to work:

How can I draw an ellipsoid with different semi-axes length in CST?

I want to simulate a 3-layered dielectric spheroid in the CST and stimulate it with a PW. I couldn't find any way to draw it in CST enviroment. Is there any option except importing from HFSS?

www.researchgate.net

 

[D.A.(Tony)Stewart]

This is nonsense. If you start from a cylinder, you will never get an ellisoid, no matter what z scaling factor you try.

--- Updated Jan 17, 2024 ---

Why not? Here is a post where that method seems to work:

How can I draw an ellipsoid with different semi-axes length in CST?

I want to simulate a 3-layered dielectric spheroid in the CST and stimulate it with a PW. I couldn't find any way to draw it in CST enviroment. Is there any option except importing from HFSS?

www.researchgate.net

nice one volker but doh.
Rotate the ellipse about the long axis to create the 3D object or define the 3D in cartesian or polar coordinates to create the ellipsoid. https://www.wikiwand.com/en/Ellipsoid

 

[volker@muehlhaus]

what nonsense?

Read your post #6 again (suggesting to scale a cylinder), then read my post again, then think about it.

 

[D.A.(Tony)Stewart]

Read your post #6 again (suggesting to scale a cylinder), then read my post again, then think about it.

I meant to say slice to ellipse then rotate to ellipsoid. TY for keeping me accurate.

 

[PlanarMetamaterials]

Barring any simple options, you can always create an equation-defined surface in HFSS (or two surfaces, and then merge them). The math might be slightly more tedious than inserting a primitive, but I don't see why it wouldn't be possible.

 

[D.A.(Tony)Stewart]

Ellipsoid -- from Wolfram MathWorld

The general ellipsoid, also called a triaxial ellipsoid, is a quadratic surface which is given in Cartesian coordinates by (x^2)/(a^2)+(y^2)/(b^2)+(z^2)/(c^2)=1, (1) where the semi-axes are of lengths a, b, and c. In spherical coordinates, this becomes...

mathworld.wolfram.com