Can you change the flow rate of liquid or gas in the pipeline by changing the pressure in the pipeline? If so, is there a formula? Well said! ! !

The flow rate can be changed. The simplest example is that when a little boy was young, he liked to pee farther than anyone else. How can he urinate further? He uses the muscle of the bladder to squeeze to generate more pressure (kinetic energy), and then the faster the flow rate, the farther he urinates. There is also a syringe for doctors to inject, which has a large extrusion force and a faster discharge of drugs. Hmm. How interesting

Head loss: ∑ HF = HF+HF' = λ (L/D) (U2/2g)+zeta U2/2g.

Friction coefficient: λ = 0.3164/(re)1/4 = 0.3164/(du ρ/μ)1/4.

Reynolds coefficient: Re=duρ/μ

Fluid velocity: u=qv/(πd2/4)

Resistance coefficient: zeta

I'll give you some formulas. These are the problems you have to solve. The length of the pipeline should not be a problem for you. You know the pipe diameter, so the unknowns such as flow can be expressed by pipe diameter and flow. Through these formulas, you will find that there is only one unknown in your equation. Ok, solve it. The calculation here may be a bit complicated, so be patient. For viscous gas without liquid, it is generally impossible to calculate the temperature and pressure difference.

Note that some numbers are exponential, and the specific equations can be found in Principles of Chemical Engineering.