Kermack Posted February 18, 2018 Share Posted February 18, 2018 Can someone look at my save and observe the water dramatically dropping in temperature when the water line reaches the liquid vent? As soon as you load up it will only be a few seconds before it happens. I've been able to reproduce this effect while exploring ways to cool water down. The Transdimensional Crashpad Cycle 162.sav Link to comment https://forums.kleientertainment.com/forums/topic/87783-bug-liquid-vents/ Share on other sites More sharing options...
TehPlayer14 Posted February 18, 2018 Share Posted February 18, 2018 I think its normal Link to comment https://forums.kleientertainment.com/forums/topic/87783-bug-liquid-vents/#findComment-1006081 Share on other sites More sharing options...
The Flying Fox Posted February 19, 2018 Share Posted February 19, 2018 This is the result of a fairly well-known bug (Around here, at least) that's been called 'Drip-cooling' although it has nothing to do with dripping. Basically, in the heat simulation of ONI, it highly favors heat rising and cold falling to simulate some kind of heat convection. The bug happens when a tile of a liquid or gas at the top of a column has less mass then the tiles below. For a liquid, this obviously tends to happen a lot. The code basically gives the temperature of the top tile to the tile below it and, as you can imagine, cooling the top tile that may only be a few grams, is much easier then cooling the tile below that's 1000 KGs. It's a bug that's been around for several updates now, perhaps even since the beginning and so far it hasn't be fixed yet. Link to comment https://forums.kleientertainment.com/forums/topic/87783-bug-liquid-vents/#findComment-1006100 Share on other sites More sharing options...
Yoma_Nosme Posted February 19, 2018 Share Posted February 19, 2018 8 hours ago, The Flying Fox said: This is the result of a fairly well-known bug (Around here, at least) that's been called 'Drip-cooling' although it has nothing to do with dripping. @The Flying Fox Could you take a look at this. I added a tile below the vent because I thought this would prevent drip cooling since it don't drips. But I'm not so sure now... Thanks! Link to comment https://forums.kleientertainment.com/forums/topic/87783-bug-liquid-vents/#findComment-1006244 Share on other sites More sharing options...
FIXBUGFIXBUGFIX Posted February 19, 2018 Share Posted February 19, 2018 6 minutes ago, Yoma_Nosme said: Quote Heat deletion/drip cooling only happens when the following four requirements are met. 1. vertical interactions between two cells (high 2*width 1) 2. elements(gas or liquid) are the same* 3. top cell is colder. 4. top cell doesn't have more mass than bottom. *Before OC update, heat deletion also happened on gas. But based on a recent experiment, I guess the heat deletion doesn't happen on gas anymore. You have met the 1,2,4 requirements, but I'm not sure about the third one. But if you remove the tile, I'm pretty sure the first requirement will be broken. Link to comment https://forums.kleientertainment.com/forums/topic/87783-bug-liquid-vents/#findComment-1006250 Share on other sites More sharing options...
Yoma_Nosme Posted February 19, 2018 Share Posted February 19, 2018 @R9MX4 Thank you. I will write the requirements down for the future. I'm not sure if it's colder. Can't check right now but will do. What's funny is that I put the tile in so it's not dripping. Oh the irony... Btw, if I would change the metal tile above the valve for a warm abysalite tile or change the tile under for a sufficiently cold abysalite tile would this prevent the bug? Link to comment https://forums.kleientertainment.com/forums/topic/87783-bug-liquid-vents/#findComment-1006267 Share on other sites More sharing options...
FIXBUGFIXBUGFIX Posted February 19, 2018 Share Posted February 19, 2018 16 minutes ago, Yoma_Nosme said: @R9MX4 Thank you. I will write the requirements down for the future. I'm not sure if it's colder. Can't check right now but will do. What's funny is that I put the tile in so it's not dripping. Oh the irony... Btw, if I would change the metal tile above the valve for a warm abysalite tile or change the tile under for a sufficiently cold abysalite tile would this prevent the bug? warmer tile or abyssalite tile above, or colder tile or abyssalite tile under is enough. In addition, though temp shift plates can't prevent the bug, but they significantly reduce the temperature difference between two tiles liquid and weaken the bug. Link to comment https://forums.kleientertainment.com/forums/topic/87783-bug-liquid-vents/#findComment-1006271 Share on other sites More sharing options...
Keyimin Posted February 19, 2018 Share Posted February 19, 2018 Yeah, it's important to remember that the so-called "drip-cooling" bug doesn't actually require any "dripping." The name confuses people (it confused me for ages lol). It can be achieved with dripping, but dripping isn't a necessary requirement. All that's required, no matter how it's achieved, is for a lower mass, colder body of liquid to come into vertical contact with a warmer, larger mass of the same liquid. Link to comment https://forums.kleientertainment.com/forums/topic/87783-bug-liquid-vents/#findComment-1006368 Share on other sites More sharing options...
Kabrute Posted February 19, 2018 Share Posted February 19, 2018 there are or were 3 bugs with liquids, 1 Drip cooling (a liquid falling as a drip through a pool could cool every tile of same liquid it passed on way to the bottom. ) 2. Step cooling (For each step the liquid ran off it dropped a partial degree in temperature) 3. Column Cooling (Any cooling applied to the top goes all the way to the bottom) the last one only applies if its the same liquid from top to bottom and its this last one that everyone keeps running into Link to comment https://forums.kleientertainment.com/forums/topic/87783-bug-liquid-vents/#findComment-1006425 Share on other sites More sharing options...
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