how do I use the biological materials in xFDTD?

[aurora9520]

Dear all,

I am trying to use the hi-fidelity package of human head & body from xFDTD.
But I don't understand the part on how to set-up the frequency dependent materials for a broadband antenna simulations.

This is what I do:
1. Import a mesh-object, e.g. the male head
2. Create antenna geometry
3. mesh it to 1mm cell size. (I would like smaller, but the memory requirement is huge!)
4. Select Edit -> Geometry -> Tissue Material Parameter, and hit "Frequency Dependent", press "compute"

But I don't see anything happen to the parameters. They are still the same values.

Is there something wrong with my procedure? Am I missing something? Can anyone please help me...

Thank you very much!!

aurora

 

[aurora9520]

Dear all,

Does anyone have experience in the head model in xFDTD? Please give some help or any valuable advice where I can get some detailed tutorial?

Thank you very much in advance...

aurora

 

[loucy]

not sure if you have changed the mesh. did you see xfdtd reporting a different estimation for the memory required? did you save your goemetry before starting the simulation?

 

[Aiiar]

Can you help me to get the sfotware
I need it but I didn't find any source on the internet

 

[DrNiiken]

Hey !

Ask the SEMCAD guys to send you a demo version of their software and a human head model.

They have a whole series of high resolution anatomical human heads - which are CAD and not voxel based.
Like this you can do any graded mesh (not homogeneous like in XFDTD, wasting RAM) on the head and get a nice numerical model with a well handable number of FDTD cells !

Check their homepage: www.semcad.com
Somewhere there is an online form where you can ask.

Regards

 

[aurora9520]

Hello DrNiiken

Thanks for your suggestion! SEMCAD responded very fast, and I am playing around with it. Seems to be pretty nice!

Thanks,
aurora