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CO2 pressure temperature phase visualization using geometry node (i.postimg.cc)

submitted 3 weeks ago* (last edited 3 weeks ago) by TacticalToothbrush@discuss.tchncs.de to c/blender@lemmy.world

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EDIT (2026-05-08) DISCLAIMER : !!! DO NOT USE WHATEVER YOU SEE HERE IN REAL LIFE SITUATION. THE NUMBERS ARE OFF BY LIKE 10 TIMES. I don't plan to debug it very soon.

Context: I was trying to make sure gas system in my airsoft^[!Airsoft@lemmy.world] gun will not destroy itself or shoot metal projectile in my face due to mechanical failure.

I make this so I can see all the parameters I need in one glance.

phase gradient

Input CO2 cartridge size
Set minimum volume with safe estimate cartridge dry volume
Set maximum volume to account for expansion chamber
Set temperature range I expect it to operate in

Result is pressure gradient plane (PSI) and its phase
small sphere = gas
large sphere = non-gas (liquid, supercritical fluid)
Color gradient for pressure regulator safe operation range

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[–] SkaveRat@discuss.tchncs.de 4 points 3 weeks ago (1 children)

dear mother of god

[–] TacticalToothbrush@discuss.tchncs.de 2 points 3 weeks ago

It's reusing very few nodes for many connections, no node group nesting so it looks messy. Unless it is modular and I can reuse it in other scenario, no point in spending more time on it just to make it look better or save few milliseconds per run.