I am a bachelor’s student and relatively new to SPIS and simulations in general. I have set up a simulation with a basic shape of a satelite inside a sphere. I have made many simulations in a parametric study which gave the results we expected. Now I want to add volume interactions but despite studying manuals, when i set the global parameters as schown in the pictures, when i finalise run configurations I get a pop up window that tells me in the volume interactors inormation section that the number of detected interactors is 0. In group editor in the computational volume group i set the parameter VolInteracFlag as 1 and provided a background density.
Anyway, here’s a NotebookLLM answer to your question. Also, consult SPIS-6-DDD_2.7.pdf in your documentation folder
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> Here's how to set it up, based on the provided documents:
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> 1.
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> Prerequisites
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> ◦
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> Ensure the "Erosion&Contamination" package is present in the lib directory of SPIS
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> .
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> 2.
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> Global Parameter Editor Settings
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> Assign GenericVolInteraction to a volInteractTypeX global parameter
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> .
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> Set the volInteractX flag to a positive value, which represents the densification coefficient
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> .
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> ◦
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> Ensure the correct number of volume interactors is set using the volInteractNb parameter
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> .
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> 3.
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> Defining the Volume Interaction
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> ◦
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> Define the volume interaction using volInteractXReaction
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> .
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> 4.
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> Cross Sections
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> Define the reaction rate by defining the cross-section
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> . There are a couple of ways to do this
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> :
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> ▪
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> Define a constant cross-section value
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> .
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> ▪
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> Provide a file describing sigma(E)
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> .
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> 5.
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> Example Reaction
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> ◦
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> The source provides the following example of ionization by electron impact: {Xe}+{electron}>{Xe+}+2{electron}
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> .
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> These steps should enable the volume interactor for photoionization within your SPIS simulation
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> .
