The Water Tank

[Richard]

Hellos,

So I need to make a fluid sim that consists of a basic retangular water tank that is filled half way then another emitter flows into it filling the tank. I've tried this sim a few times now and keep running into the same issue of having the sides and bottom of the fluid distort, I've tried setting up drag forces for these areas but that's not working too well, is there a way to make it so I can keep all the other sides besides the top straight? sorry I am new still ><

[FlorianK]

Hi Richard,

a picture illustrating the issue could be useful. In most cases, the behavior you are describing is due to a too small particle resolution.

[Richard]

here is what it looks like:

[Richard]

I am attempting this simulation again with 2013 as improvements have been made. now I am having a huge issue
just getting the water into the tank. Using the display volume I can see the issue, I just have no idea how to fix it. I have tried decreasing the cell size value for both the tank object and the domain down to 0.05 and it's still very far from the surfaces of the tank, I have tried the domain offset and the surface offset and adjusting these values didn't help much..
I have attached the realflow file and the supporting .SD tank object, if anyone has the time could you please enlighten me as to what I am doing wrong? or maybe what I want to do is not possible with Hybrido? using the same setup I noticed that a standard emitter will come a lot closer to the surfaces..

[o.delellis@gmail.com]

oook,

for starters, you had everything linked to the 'hub'

link stuff to the HY_domain, but not the 'tank fluid' otherwise your particles will collide with that.

then, keep all your cell sizes exactly the same

also there seems to be an issue with your 'tank' geometry, it is leaky. i suspect its due to the walls being smaller than the cell size, so make them thicker.

i replaced it with an 'cube top open' and made it bigger to allow for the 3 cell offset on the wall the 'shell' mode applies.

and finally you can't use K_age with H2.

but...you will have a hrd time gettin flat sides on H2, as it is designed to be a large scale solver where you almost never want to see the sides or bottom of the fluid

[CG_Nema]

What is the scale of the tank? It its large you definitely won't get flat sides unless you let the fluid settle for a while.