Gas-Liquid transport in ducts
Gas-Liquid transport in ducts
(OP)
Hi,
A two-phase fluid flowing in a pipe (6 in) which the proportions are:
W gas: 1467 kg/h ρ gas = 6,5 kg/m³ Q gas = 225,7 m³/h
W liq: 22969 kg/h ρ liq = 943 kg/m³ Q liq = 24,4 m³/h
W total: 24436 kg/h Q total: 250,05 m³/h
What is the velocity of the liquid in this tube 6 in. sch 40 (DI = 0.1541 m)?
Thank you.
A two-phase fluid flowing in a pipe (6 in) which the proportions are:
W gas: 1467 kg/h ρ gas = 6,5 kg/m³ Q gas = 225,7 m³/h
W liq: 22969 kg/h ρ liq = 943 kg/m³ Q liq = 24,4 m³/h
W total: 24436 kg/h Q total: 250,05 m³/h
What is the velocity of the liquid in this tube 6 in. sch 40 (DI = 0.1541 m)?
Thank you.





RE: Gas-Liquid transport in ducts
Fictitious velocity in liquid phase: 0.36m/s
Supposing a homogenous mixture without any interaction, the velocity in your pipe would be 3.73m/s
But this inquiry should not get any reply. With the data given, the answer will always be V=Q/(PI()/4*DI^2) in any homogenous unity system
RE: Gas-Liquid transport in ducts
The velocity of the fluid in the pipe would be:
Q = V.A
v = (250.05 / 3600) / (pi * 0.1541 ² / 4)
Liquid velocity in the pipe: 3,724 m/s the same Velocity of the gas as was used the total flow and not only the flow of liquid?
Thank you.
RE: Gas-Liquid transport in ducts
Therefore unless the proerties relate to the specific location where you want ot know the liquid velocity (why ??) you need a proper analysis program to work it out.
The density and volumetric flow of the gas look like thay are at standard conditions (i.e. 1 bara, 15 Deg C). Without konwing the pressure at the point of interest you can't begine to estimate the velocity as you don't know if the pipe is 90%, 50% or 10% full of liquid.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Gas-Liquid transport in ducts
Maybe if you share more data or the reason why do you need the liquid velocity we could point you toward a method or guidelines for an estimation.