Message by Aleksandra Chudnovskaya:
Hello! I have some questions and I hope, You’ll help me…
If my covering material is not included into the given list how can I include it? (For example, Al). What for in global parametres two streams of ions and electrons are specified? If my discrete device is on a surface of a satellite how should I connect it with the satellite ground through electric nodes? Whether can’t I really arrange the device on the spacecraft ground? Whether should I do in that case an aperture and place the differential device in it? How can I specify, that one of device surfaces is the glass (I have not found such material)? In what system of co-ordinates I draw my spacecsaft in the editor gmsh and how then can I specify a sun direction in global parametres in the “Surface Interactions” (in what system of co-ordinates)?Is there a full example of work with SPIS? From the very beginning and to the end (gmesh+pre-processing+simulation+post-processing)?
Thank You, Aleksandra
Message by Benoit Thiebault:
That’s indeed a lot of questions !
I will try to answer them
If my covering material is not included into the given list how can I include it?
In current SPIS version, this is a bit complex, as you have to edit the materials directly in SPIS-NUM library and compile it. Future versions will solve this issue.
What for in global parametres two streams of ions and electrons are specified?
SPIS is multi-species. By default two populations are defined : thermal ions and thermal electrons. You can define high energy ions and electrons with this second population when you want to model a bi-maxwellian plasma
If my discrete device is on a surface of a satellite how should I connect it with the satellite ground through electric nodes? Whether can’t I really arrange the device on the spacecraft ground? Whether should I do in that case an aperture and place the differential device in it?
I’m not sure I understand your question. If your device is connected to the ground, in the GroupEditor, select the group corresponding to the device and assign ElecNode-0 as Node.
How can I specify, that one of device surfaces is the glass
Glass is currently not available.
In what system of co-ordinates I draw my spacecsaft in the editor gmsh and how then can I specify a sun direction in global parametres in the “Surface Interactions”
In Gmsh, the coordinate system is cartesian. SPIS uses the same coordinate system, so depending on how you designed your spacecraft, you can specify the sun direction using the same coordinates system.
Is there a full example of work with SPIS? From the very beginning and to the end
There is such an example with the training course: \http://dev.spis.org/projects/spine/home/meeting/mxi/data/083bb6b3c0a8001400c4d16872df8da9
Message by Aleksandra Chudnovskaya:
Thank You very much!!!