Dont know how to word this properly, but a question on volume, flow, and psi.

[SwGts]

I don't know if this is the right section, and I am not entirely sure on how to word this- Hoepfully I can make this clear enough however:

If we know the volume of a setup, for a simple example let's just say a small straight tube. If we know the psi inside this tube, is it possible to calculate the CFM going through the tube to get that psi? Is it possible to Keep the same volume tube, retain the same Psi, and increase the cfm?

Hope I've made this clear enough.

 

[mgb_phys]

If you know the pressure DROP along a tube (or across an opening) and you know the density and viscosity of the fluid you can get the (approximate) flow rate.
It's slightly different equation depending on the speed etc.

http://en.wikipedia.org/wiki/Orifice_plate

 

[thomate1]

I would approach this question by first clarifying the terms being used. Volume refers to the amount of space occupied by a substance, while flow refers to the movement of that substance through a given space. PSI (pounds per square inch) is a unit of pressure, which is a measure of the force exerted by a substance on its surroundings.

Based on this understanding, it is not possible to directly calculate the CFM (cubic feet per minute) based on the volume and PSI of a setup. CFM is a measure of flow, while volume and PSI are independent variables that do not determine flow on their own. Other factors, such as the diameter and length of the tube, as well as the substance being flowed, also play a role in determining CFM.

However, it is possible to manipulate the other variables in order to increase CFM while keeping the volume and PSI constant. For example, increasing the pressure or decreasing the diameter of the tube can lead to a higher flow rate. This is known as the Bernoulli's principle, which states that as the speed of a fluid (such as air or water) increases, the pressure decreases.

In conclusion, while it is not possible to directly calculate CFM based on volume and PSI, it is possible to manipulate other variables in order to increase flow while keeping these variables constant. It is important to consider all relevant factors and principles when designing and analyzing a setup involving volume, flow, and pressure.