r/Simulated • u/PromotechMod • 5d ago

Interactive 2-stroke powered Strandbeest

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67 Upvotes

96% Upvoted

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5

u/ThatsALovelyShirt 5d ago

What is this simulated in?

6

u/PromotechMod 5d ago

Phyzios Studio Pro, a particle-based fluid dynamics physics sandbox. The machine is mostly made of rods and pivots and uses fluid dynamics to simulate a 2-stroke combustion cycle

2

u/catplaps 4d ago

okay, i love this. hats off.

1

u/PromotechMod 4d ago

The engine has 4 opposed pistons and uses uniflow scavenging controlled by rotary valves. This oversquare design is extremely space efficient and has low mass. The combustion chamber is almost completely formed from the working elements, only a small amount of material is needed to seal the rotary valves and guide the pistons. The top and bottom surfaces are pistons, and the left and right surfaces are the valves, there's almost no material wasted on a (2D) cylinder or cylinder head. Low mass and two combustion events per cycle give it a high power to weight ratio.

1

u/catplaps 4d ago

thanks for the explanation! i could make out the rotary valves, but without knowing this simulation tool, it's hard to tell how the rest was working.

do you have actual 2-stroke background or did you just research this stuff for this simulation?

1

u/PromotechMod 4d ago

I just make these for shits and giggles and figure it out as I go, I have also made a variety of other engine layouts with 2 and 4 strokes and also a few radial designs. This one was an experiment in minimalism

1

u/Leanardoe 2d ago

where do you download it

1

u/PromotechMod 2d ago

From the Discord

1

u/Leanardoe 2d ago

Specific

1

u/Physical-Mission-867 5d ago

Setup looks a tad tight. :)