Ager 2.0 Hose?

[joytron]

Well when you start getting into water vapor its a whole different animal.

[Skoozle]

Water is a non-compressible fluid where Vapor is a compressible fluid, they behave differently. I won't get into the details because I slept through Fluid Dynamics.

[ih303]

[quote name='joytron' timestamp='1292469783' post='491482']
Well when you start getting into water vapor its a whole different animal.
[/quote]

The same principals apply. Vapors and gasses are essentially the same.

[quote name='Genie' timestamp='1292451700' post='491450']
I can't help but feel that there's probably some formula out there that shows that fluid/smoke/vapor still flows faster and better through a wider hose than a smaller hose even if the wider hose has the same size tip (essentially, after adding a hygienic mouth tip).[/quote]

Well, there is something to be said about friction inside the hose. Basically, friction loss is directly related to friction coefficient, length, and velocity. Increasing or decreasing any of those variables will effectively increase or decrease the amount of energy lost due to friction. And since this loss translates to a harder pull, it would follow that shorter, wider hoses would offer the least restriction. Interestingly enough, one of the variables related directly to friction coefficient is velocity. That said, it is also possible to decrease friction by pulling softer as a harder pull increases velocity thus increasing friction. The question is whether or not any of the values of these variables are high enough to make the effects of friction loss noticable.

As far as the smoke flowing faster through a wider hose, it would seem that exactly the opposite is true. If pressure and amount of smoke pulled are held constant, velocity would have to increase in a smaller hose to compensate for it's smaller diameter. But if you define "better flow" as less restricted flow, then you'd be right to assume that you'd get that from a larger diameter hose.

Ultimately, physics proves you right in the sense that you get an easier pull from a wider hose than a more narrow hose both outfitted with the same, smaller diameter tip. But like I mentioned before, you are sacrificing some of the ease of pull by restricting the flow at the tip in order to get a more flavorful (i.e. dense), faster moving stream of smoke. I guess it just depends on what you prefer.

[Genie]

[quote name='ih303' timestamp='1292531879' post='491546'] But like I mentioned before, you are sacrificing some of the ease of pull by restricting the flow at the tip in order to get a more flavorful (i.e. dense), faster moving stream of smoke. I guess it just depends on what you prefer.
[/quote]

I like a blast of flavor to hit one, concentrated spot on my tongue until it goes numb from the joy of it! Then I have to switch sides.

[joytron]

I understand the whole venturri principle, but at the rates we are dealing with will there actually be a noticeable affect. Is the change in the diameter from the hose to the tip going to to change the pressure in a measurable sense? Also keep in mind generally the hose port shrinks to a smaller diameter than the tip of a hose, so it would be safe to assume that any hose with a width larger than the smallest part of the hose port would offer the same draw. That is where I have issues, most every one would agree that the draw is better with a wider gauge hose (to a certain extent)

[ih303]

[quote name='joytron' timestamp='1292536358' post='491552']
I understand the whole venturri principle, but at the rates we are dealing with will there actually be a noticeable affect. Is the change in the diameter from the hose to the tip going to to change the pressure in a measurable sense? Also keep in mind generally the hose port shrinks to a smaller diameter than the tip of a hose, so it would be safe to assume that any hose with a width larger than the smallest part of the hose port would offer the same draw. That is where I have issues, most every one would agree that the draw is better with a wider gauge hose (to a certain extent)
[/quote]

Yeah, I can imagine a lot of people reading this thread and thinking, "So after all that writing all ih303 is saying is that wider hoses pull easier? Um... Duh." But that's exactly why this is all so fascinating! This is something we experience every day but probably don't really know the WHY and HOW about it.

As far as the the port is concerned, you're absolutely right - it's the smallest opening in the system that has the greatest impact on the characteristics of the system. Still, while there may not be anything we can do about the ID of the plumbing in our hookahs, we can certainly choose our bowls and hoses wisely in order to reduce friction in the system thereby making it easier to pull.

Of course all this is based on the assumption (as joytron touched on) that things such as friction loss and the Venturi Effect are even noticable. IMO they are, although some are more noticable than others. The problem is that even if you could hold a stimulus constant, the variance of perception between individuals makes it a worthless substantiator. The good thing is that a lot of science is scalable meaning that the same laws and principals hold true regardless of size or scope of the system, and thus far I haven't found anything suggesting that vapor flowing through a hookah hose is an exception to the rules of Fluid Dynamics.