Typical coefficient of discharge for an airlift pump
Typical coefficient of discharge for an airlift pump
(OP)
Does anyone know where i can obtain a typical Cd for an airlift pump ? needs to be reference-able (if that is a word!)
I understand that there any many empirical formulas in circulation that use two phase flow etc however i need to find the head and flow rate (theoretical and actual) of an airlift when all i have is the actual flow rate, air pressure, outlet area and submergence (oh and assume water = 1000 kgm^-3). All of the formulas out there require inlet velocities etc which i do not possess.
I understand i would only get a rough figure however its better than nothing !
Thank you very much i appreciate it
I understand that there any many empirical formulas in circulation that use two phase flow etc however i need to find the head and flow rate (theoretical and actual) of an airlift when all i have is the actual flow rate, air pressure, outlet area and submergence (oh and assume water = 1000 kgm^-3). All of the formulas out there require inlet velocities etc which i do not possess.
I understand i would only get a rough figure however its better than nothing !
Thank you very much i appreciate it





RE: Typical coefficient of discharge for an airlift pump
I found one from 2003 which had some good reference material.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Typical coefficient of discharge for an airlift pump
Independent events are seldomly independent.
RE: Typical coefficient of discharge for an airlift pump
With mixture of solid(S),gas(G) and liquid(L) I've used an article by G.F. Hewitt on Void Fraction, however, I do not have his book anymore for reference, so you'll have to research it in the library. This is the article you want if the mixture fractions are either S,G,L or G,L