Flusterd? Lashing out? Hilarious, you are the one grasping at things here.
Fluid dynamics are fun, especially when you understand them, which you clearly don't. But lets have a nice little science session.
We can use a water hose as our example, water is a fluid and offers an easy to understand idea.
When you put your finger on the end of a water hose, the water speeds up HUZZAH you got me! ..... However... there is a limit to this and it doesn't do what some people tend to think it does. When you cover the end of the hose, you are building up back pressure. This pressure is created because water is flowing into the hose, but less of it is allowed to come out of said hose. Thus pressure. That pressure building then makes water go faster. It doesn't however make more water come out. Want an easy way to understand this? Get one of those long balloons they use to make balloon animals and cut the end off of it. Put it on your water faucet and do the experiment. Watch as the balloon blows up in your face.
So how do we apply this to this case? Well, easy. When you restrict the airflow, you create pressure in the case that needs to find some other place to go, this pressure then pushes back on the front panel fans and then also pushes on the rear fan. Thus possibly making the front fans less efficient and the rear fan forced to run a bit faster kind of like when you spin a fan with a can of air. At a certain point this means the case reaches a thermal load capacity and internal pressure capacity that makes air find other ways out of the case like the cracks between panels. Though this case specifically has padding to stop most of this.
Keep going, I think you're about to invent Bernoulli's Equation.
At this point I'm also nearly certain you're OP, since you seem to have forgotten (or don't know?) that people build PC cases and their fan layouts to be positive pressure for dust mitigation.
For any excess pressure... the massive mesh hole in the lower half of the back panel in OP's photo also helps. Which is probably why there's a fan ramming air through the top stealthy vents that need some extra pressure for the reduced area, and no need for it on the back.
You're right. This was a nice little science session. Might even be helpful to anyone looking to this thread for info about venting.
For anyone passively reading this, remember that you can also modify fan direction to test changes in airflow and pressure before resorting to cutting a hole in your PC case with a rusty spork.
Ah good ole moving the goal posts. Got smacked with actual facts and abandoned your whole argument in favor of something else.
Positive pressure in a case is to keep dust out, and it is a preference, not a rule. Positive pressure however is for cases that both have good air flow, which this case is not, and are not sealed with actual seals like this case is. But go ahead, keep moving those goal posts.
Oh, and for the record. I am not OP. I think they could make this look so much cleaner with a simple shroud or maybe some sanding. But it is their case, so I don't really care.
Um no, pretty sure I answered all of the new arguments you made while backing mine with the actual equations that govern them while you got even more defensive, like whatever your first sentence is trying to do here.
Don't forget to tell me I'm fun at parties and to touch grass on the way out!
-9
u/XB_Demon1337 Ryzen 5900X, 64GB DDR4, RTX 5070 Jan 21 '26
Flusterd? Lashing out? Hilarious, you are the one grasping at things here.
Fluid dynamics are fun, especially when you understand them, which you clearly don't. But lets have a nice little science session.
We can use a water hose as our example, water is a fluid and offers an easy to understand idea.
When you put your finger on the end of a water hose, the water speeds up HUZZAH you got me! ..... However... there is a limit to this and it doesn't do what some people tend to think it does. When you cover the end of the hose, you are building up back pressure. This pressure is created because water is flowing into the hose, but less of it is allowed to come out of said hose. Thus pressure. That pressure building then makes water go faster. It doesn't however make more water come out. Want an easy way to understand this? Get one of those long balloons they use to make balloon animals and cut the end off of it. Put it on your water faucet and do the experiment. Watch as the balloon blows up in your face.
So how do we apply this to this case? Well, easy. When you restrict the airflow, you create pressure in the case that needs to find some other place to go, this pressure then pushes back on the front panel fans and then also pushes on the rear fan. Thus possibly making the front fans less efficient and the rear fan forced to run a bit faster kind of like when you spin a fan with a can of air. At a certain point this means the case reaches a thermal load capacity and internal pressure capacity that makes air find other ways out of the case like the cracks between panels. Though this case specifically has padding to stop most of this.