Creating the geometry using MNCPX VisEd

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TL;DR
I'm having problems creating the geometry using MNCPX VisEd
I'm working on the MSFR design and want to calculate keff. I'm trying to use the MNCPX VisEd program included with MCNP 6.1 to create my geometry. The reactor I'm designing doesn't contain fuel rods or moderator structures. The molten salt fuel circulates within the cylindrical reactor core.

I'm having problems creating the geometry using MNCPX VisEd. VisEd allows for easy drawing of nested sphere, cylinder, or rectangular prism cells. However, when you want to draw a torus section within a cylinder or deviate from the geometries found in conventional reactor designs, creating surfaces and cells in CSG format is not user-friendly.

I've tried importing 3D geometries with the .SAT extension into VisEd from programs like ANSYS Design Modeler, SolidWorks, and AutoCAD, but I haven't been able to open the files. Can you recommend a method for creating an input file for the geometry below using VisED or another viewing/drawing program?
 

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  • Ekran görüntüsü 2025-11-22 150754.webp
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