+- Obi Official Forum (https://obi.virtualmethodstudio.com/forum)
+-- Forum: Obi Users Category (https://obi.virtualmethodstudio.com/forum/forum-1.html)
+--- Forum: Obi Fluid (https://obi.virtualmethodstudio.com/forum/forum-3.html)
+--- Thread: Help Sucking a Fluid from a pipette/Dropper (/thread-3537.html)
Sucking a Fluid from a pipette/Dropper - shemtomke - 22-07-2022
I have the following questions:
- Is it possible to suck a liquid in an upward manner and later on drop the liquid into a specific beaker using gravity? in this case, the dropper will have to make it in drops, not in a flow-like pressure.
- How to make a liquid in a burette and allow drops to flow when opening it?
- How can I reduce how the liquid reacts in such a way when it is picked up it's not wavy, I wanted it to be stable. It is very shaky and it's due to settings in the buoyancy e.t.c (Fluid Settings) though I don't know the right path to follow to make the liquid stable enough.
RE: Sucking a Fluid from a pipette/Dropper - josemendez - 25-07-2022
(22-07-2022, 01:08 PM)shemtomke Wrote: [*]Is it possible to suck a liquid in an upward manner and later on drop the liquid into a specific beaker using gravity?
Obi does not simulate air, so you can't create a vacuum to suck liquids into it. You can however apply external forces to any particle, so you can calculate this vacuum yourself and apply the required forces to the fluid by writing into the solver.externalForces array. See:
http://obi.virtualmethodstudio.com/manual/6.3/scriptingparticles.html
(22-07-2022, 01:08 PM)shemtomke Wrote: in this case, the dropper will have to make it in drops, not in a flow-like pressure.
It depends on how fast you release the fluid, and the value of its surface tension property. Fluids with large surface tension values will tend to from drops even if you release them fast. Fluids with lower surface tension will need to be released more slowly to form drops.
(22-07-2022, 01:08 PM)shemtomke Wrote: [*]How to make a liquid in a burette and allow drops to flow when opening it?
This is something you have to implement yourself, there's no burette-like controls built into Obi. There's many different ways you can approach this: from using an emitter placed on the tip of the burette and controlling its emission speed using the tap, to actually simulating the entire burette as a container collider and implementing the tap using a collider as well (this last approach will likely be a lot more expensive to simulate accurately).
(22-07-2022, 01:08 PM)shemtomke Wrote: [*]How can I reduce how the liquid reacts in such a way when it is picked up it's not wavy, I wanted it to be stable. It is very shaky and it's due to settings in the buoyancy e.t.c (Fluid Settings) though I don't know the right path to follow to make the liquid stable enough.
Not sure what you mean, buoyancy doesn't have anything to do with how fluid behaves when picked up. Fluids will react to the force(s) applied to them, if they're inside a container and colliding with its walls, the smoother the container movement the more stable the fluid motion. How are you moving the container around?
kind regards,