Scenario: There's a 1 inch, rubber hose, with fluid flowing in it at 75 psi. The density of the fluid changes (but I'll just be calculating with a specific known density, 8.35). So, I want to get the flowrate to 15-20 gpm. The initial flowrate is unknown (unless we can calculate it based off the pressure and hose diameter).
I'm thinking of using the pressure drop equation, but 1) the formula requires a flowrate. I don't know if I'm supposed to use the initial flowrate or somehow calculate the original and 2) to get the friction coefficient, I'd need Reynold's number, which again, requires the flowrate or velocity.
Anyone have any idea about which flowrate I'm supposed to use & whether I'm using the right equations? Thanks.