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posted by Sébastien Hess at Feb 5, 2019 10:04 AM
Dear Hodong,

this is due to the fact the SPIS outputs are in charges/m^3 by default, so that the neutrals appear to have a zero density. In theory, SPIS auto adapt and should display particle/m^3 for neutrals, but this scheme does not work in all cases. You can force densityChargeState=2 to get all the outputs in particles/m^3



posted by Hodong Lee at Feb 5, 2019 4:13 AM
Hello, I have been working with simulation of Hall effect thruster equipped on a satellite, using SPIS-Propulsion-6.0.0.

I am trying to simulate CEX Xe+ particles through SPIS, but I have several questions about it.

SPIS propulsion 6.0.0 provides a means to apply a CEX chemical formula in the global parameter tab ' volume interaction '

I tried using following equation as SPIS-EP-Manual:


However, a simulation result shows no fastXe distribution (every value is 0) even though CEX Xe+ distribution was shown.

I tried to change outPart#VolInteract# value as Xe or fastXe but It did not solve the problem.

Is it normal that I cannot obtain fastXe results from SPIS simulation?

Moreover, Is it right to write particle name just as 'Xe+' (particle type), not 'Thruster1_Xe+' (exact population name), for example?

I will look forward to hearing from anyone who know the answer to this question.

Hodong Lee.