calculation of liquid-film thickness

[confidential]

Dear friends

i searched many papers and books,and also internet

for a formula to calculate liquid-film thickness in two
phase(liquid-gas), annular-mist flow in the pipes

if any one can provide me with this formula ,i will be very thankfull

thanks

 

[sailoday28]

How many components(ie, steam vapor and condensed water)?

 

[confidential]

they are oil and natural gas ,like in any field pipeline which transmits this mixture .


i used a mechanistic model published in JCPT (1997),

"A MECHANISTIC MODEL FOR MULTIPHASE FLOW IN PIPES"

but they dont mentioned how to evaluate liquid-film thickness in annular-mist flow,and liquid height in stratified flow.

i would be very appreciated if you could provide me

with those formulas

thanks