simulation in HFSS

[SamiraAmiri]

hello
I want to simulate an underwater antenna in HFSS. does anyone know anything about it?
I want to put antenna in a box and then submerge the box in to water. Does anyone know how I can determine radiation box? my radiation box is water? or I should use PML for defining water as the medium?

 

[aliarifat794]

If your simulation setup needs an open boundary, then you may need to add a radiation boundary outside the water box.

 

[volker@muehlhaus]

I wonder if the HFSS radiation boundary works for other media other than air. In the EM tools that I use, absorbing boundary is designed to give E/H = 377 Ohm

 

[vfone]

In HFSS right click on Boundaries/Edit Global Material Environment, click on default material (which is vacuum) an choose the material you want.
There are few options for water: water 0.2-35C 0.1-400GHz, water_distilled, water_fresh, water_sea.

 

[SamiraAmiri]

Many thanks to all of you ...

another question?

Should I use a box with the material of water for the radiation box?

Should this box be as far away from the structure as lambda/4?