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I'm trying to create a physics-based animation using two rigid pistons sliding inside a passive rigid body cylinder. The right cylinder pulls against a fluid geometry domain, which pushes against the left piston, causing it to slide to the left. I'd like to know if this is achievable with Blender, and if so, could you please give me some advice? I'm a Blender newbie who has been struggling with this issue for quite some time.

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    $\begingroup$ You'll never a physical accurate simulation, you can only fake the simulation, your fluid can also be fake instead of physic, it depends on your needs I guess. $\endgroup$
    – moonboots
    Oct 16, 2022 at 14:23
  • $\begingroup$ Well, the purpose is not to get physically accurate results, but to simulate liquid-like behavior for the fluid domain - specifically, force transfer via compressibility (like a stiff spring I guess). $\endgroup$
    – Nick89
    Oct 16, 2022 at 14:33
  • $\begingroup$ maybe show the different steps of the animation? $\endgroup$
    – moonboots
    Oct 16, 2022 at 14:35
  • $\begingroup$ Yes, that will be the pure animation approach. I was just curious if there are any specific settings or procedures to follow in order to get physics-based animation. $\endgroup$
    – Nick89
    Oct 16, 2022 at 14:38
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    $\begingroup$ To me it sounds like (since no physically accurate results are needed) as if you could simply animate this manually with keyframes... $\endgroup$
    – Gordon Brinkmann
    Oct 16, 2022 at 15:02

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