Displacement of a pipeline
Displacement of a pipeline
(OP)
Dear all,
my guess is to displace sea water from a long pipeline (kilometers) with fresh water without any physical separation. To do this I've to size an adequate pumping spread in order to assure a minimum velocity in order to avoid stratification along the pipeline. Any idea to roughly estimate this minimum velocity? ... I know the AGA indicates a minimum velocity as a function of density difference, but AGA speaks about gases ... Suggestions?
Tahnk you all
Regards
my guess is to displace sea water from a long pipeline (kilometers) with fresh water without any physical separation. To do this I've to size an adequate pumping spread in order to assure a minimum velocity in order to avoid stratification along the pipeline. Any idea to roughly estimate this minimum velocity? ... I know the AGA indicates a minimum velocity as a function of density difference, but AGA speaks about gases ... Suggestions?
Tahnk you all
Regards
Matt17
Process Engineer





RE: Displacement of a pipeline
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Displacement of a pipeline
Matt17
Process Engineer
RE: Displacement of a pipeline
NRe = Dvρ/μ > 4000
Good luck,
Latexman
RE: Displacement of a pipeline
I mean an equation to estimate a minimum velocity to avoid stratification ... but thank you anyway ... it's never late to refresh my scholastic lectures ;)
Matt17
Process Engineer
RE: Displacement of a pipeline
v > 4000μ/(Dμ)
Good luck,
Latexman
RE: Displacement of a pipeline
v > 4000μ/(Dρ)
Good luck,
Latexman
RE: Displacement of a pipeline
My guess would be to have a correlation between minimum velocity and something like difference of density between fluid to be displaced and fluid to displace.
Regards,
Matt17
Process Engineer
RE: Displacement of a pipeline
RE: Displacement of a pipeline
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Displacement of a pipeline
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: Displacement of a pipeline
Here, with seawater and fresh water, it's probably not much more than 2000.
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Displacement of a pipeline
Good luck,
Latexman
RE: Displacement of a pipeline
Regards,
Matt17
Process Engineer
RE: Displacement of a pipeline
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek