How Does the Compressibility Factor Influence Flow Rate in Fluid Dynamics?

[naushad]

I shall be thankful if anyone please help me understand this equation. thanks

Qid = H.Vid x Uid
= H.Vid x V/Zb
Zb=Compressibility Factor
Uid= V/Zb
=< 1
GHv =HV/Zb
man from mechanical engineering, chemistry or natural gas industry may help

 

[HallsofIvy]

I've moved this from "tutorials". It may get more responses here- but it is almost impossible to identify a formula without some information as to what the various symbols mean. Where did you see this?