The Powder Toy

Ben_Ger

I came to notice that Cooled air still flows upwards and would like to ask: Was that intentional or is it a bug?

tmo97

This post is hidden because the user is banned

Catelite

..As far as I've been able to tell, it doesn't? 10000 C GLOW rises into the air all by itself due to air rise.

0C GLOW doesn't. It doesn't even make a steady flow of air upwards. In fact, I can't find anything that does.

Maybe post a link to a save where you're having an issue with this?

And yo, tmo97. Nice complaint there. =o

ChargedCreeper

Catelite:

..As far as I've been able to tell, it doesn't? 10000 C GLOW rises into the air all by itself due to air rise.

0C GLOW doesn't. It doesn't even make a steady flow of air upwards. In fact, I can't find anything that does.

Maybe post a link to a save where you're having an issue with this?

And yo, tmo97. Nice complaint there. =o

I think he means the effect where hot air rising pushes cold air above it also upwards. Not that the cold air rises on its own because it doesn't. I just messed around with heat view and LN2 with ambient heat, and that is what I noticed.

Catelite

..I'm not sure where that isn't at least accurate to IRL, but if you want air to have more 'volume' so that it flows rather than simply steamrolls itself I uh @_@

Ben_Ger

@Catelite (View Post)

I mean cold air falling under layers of normal or even hot temperature air.

maybe the effect is too small to notice (gonna make a test real quick and post it here) but from the looks of it, if you cool something it just evenly disperses the cold, but doesnt just flow downwards as its supposed to.

EDIT:
confirmed.

1845883View Save 1845883

If you look at this, you will see cold air rising and pulling the GRAV with it.

Catelite

This isn't an issue of the air being cold specifically. You have an item with zero gravitational response sitting in simulation settings that push particles up when inside of heated air.. That only takes effect when gravity is turned off.

The movement of the GRAV in this case is just because air is flowing in the first place, and because it doesn't respond to gravity. :P

The movement of temperature through the ambient heat grid disturbs the air -just- enough to get a few particles of GRAV moving, and that by itself generates more velocity and movement than the cooled column of particles does.

Ben_Ger

@Catelite (View Post)

hm..... cooled air still doesnt move down, does it? as in: increased density making it fall.

Should be easy to code, just take the code of Ambient heat airflow and turn around a "<".

Or at least thats what I think it looks like.

I am probably wrong but I guess its something like that:
If Ambient heat cell temp underneath > Ambient heat cell overhead = Airvelocity with positive y

now its only gotta be reversed.

I at least guess thats how the code looks like, roughly. There is probably also a part that takes the heat difference into consideration.

EDIT:

I guess its just some strange coincidence that there is a small bubble of sightly colder air on the top, right?

Catelite

Strong differences in temperature make huge fluctuations in temperature, and -generally- hot air rises; cold air incidentally gets lifted up into the air and spread out all over the place, the accuracy of which I'm inclined to think is probably as close to spot-on as it needs to be.

It's a lot more obvious if you make a 5000C air environment and make bubbles of hot and cold air, but the hot air beneath the cold air is still lifting the cold air up, and the hot air inside the cold environment is still pushing itself up.

I'm not really sure what's wrong with this situation besides air not being as granular as it could be?

Ben_Ger

@Catelite (View Post)

Yeah, what I meant was just:
If you have for example very cold diamond rods sitting around somewhere (maybe cooled by dead life) shouldnt it produce a steady downwards stream of air? I mean I am not a pro in this.

Ambient Heat