Debye model with dielectric smoothing turned off

Zoe

unread,

Jan 29, 2021, 11:56:28 AM1/29/21

to gprMax-users

Hi dear masters,

In my simulation, I realized when I use debye model in my object, the dielectric smoothing at this position is automatically turned off even if I do not use 'n' in my model constructing. Is there any method to turn it on while using debye or other dispersive models?

Thank you.

Best,

Zoe

Craig Warren

unread,

Jan 29, 2021, 3:57:11 PM1/29/21

to gprMax-users

Dear Zoe,

Curious to know for what reason(s) you are interested in using dielectric smoothing with Debye materials? In any case, it is not a trivial concept to do dielectric smoothing (material property averaging) when Debye materials are used. It is not possible to do in the current (v.3.x) version of gprMax, but will be available in the next release sometime in the first half of this year.

Kind regards,

Craig

Zoe

unread,

Jan 29, 2021, 6:35:02 PM1/29/21

to gprMax-users

Thank you Craig! I am interested in constructing an inhomogeneous model considering water as one of its components. It is not soil, so peplinski model doesn't work for me. Great to know it will be included sometime in the future!

Best Regards,

Zoe

Craig Warren

unread,

Feb 1, 2021, 5:35:54 AM2/1/21

to gprMax-users

Hi Zoe,

Thats fine to be using the Debye model with media other than the Peplinski model. My question is why is the lack of dielectric smoothing important?

Kind regards,

Craig

Zoe

unread,

Feb 1, 2021, 1:15:23 PM2/1/21

to gprMax-users

Hi Craig,

Please correct me if I am wrong. I believe they will give me different answers with dielectric smoothing on and off. This is based on my experience in using the common add_material command. I tried to build a heterogeneous model with a high-dielectric component (say water) inside and found their results are different (not slightly) with dielectric smoothing on and off. So I assume the debye model with this feature on and off will give me similar situations. Thank you.

Best,

Zoe

Craig Warren

unread,

Feb 18, 2021, 3:30:14 PM2/18/21

to gprMax-users

Hi Zoe,

You will see differences with dielectric smoothing (material property averaging) turned on and off, especially with materials that have high dielectric constant. Obviously to test this in the current version of gprMax (v.3.x) these materials cannot have dispersive properties, such as Debye. So yes, if the differences are significant for the examples you are interested in, then having dielectric smoothing with Debye materials maybe useful to you.