Recent content by Matt17

Thank you chicopee for your help ... I'll check! Matt17 Process Engineer

Hi guys, we are looking for some examples of dilatant fluids, for an application we're thinking to design (something similar to the Viscous coupling system). In detail, we would like to know some typical flow consistency index (K) and flow behaviour index (n), according to the power law. I've...

Thank you again for your answer, I'll try for sure. Again, my interest is to study the behavior of the seal inside the pipeline and, in detail, the force to push the item. Matt17 Process Engineer

Hi Constant Effort, thank you for your time. I understand you suggest a trial with something closer to the real problem. However, what about if I want find the solution on the paper? Can you indicate me a reference (also a scholar reference like a book) with a similar problem? Matt17 Process...

Hi LittleInch, thank you foryour interest. Yes, of course it's very close to a pig, you're right ... my interest to this problem is that I want to know exactly the mechanical force from bending of the material that you have mentioned, however my mechanical knowledge is not enough to analyze...

Gents, I hope that today problem will be simple for a mechanical engineer, but trust me I'm a poor chemical engineer so don't take anything for granted [smile] Well ... we're speaking about an annulus-type seal cup which is forced inside a pipeline having an internal diameter smaller than the...

v. 7.2 Go to Tools --> Reports Make your selections Print as *.pdf (but you need a pdf generator) Regards, Matt17 Process Engineer

Latexman rises the right question: what are we speaking about? Matt17 Process Engineer

Good morning, I don't know the referenced article, but I suggest you to take a look of NFPA 69, § E.2 Good luck! Matt17 Process Engineer

I guess you have not the support of any software, right? If you're speaking about a vent line, gas velocity inside should be sufficiently high to approximate the thermal behaviour to adiabatic ... in this way you can estimate the outlet temperature by means of an isenthalpic. However, be aware...

Ok, thank you all ... my only doubt is regarding the pipe diameter (>1 m), but if it's only a problem of Re I'll have no problem. Regards, Matt17 Process Engineer

Probably there's a misunderstanding ... forget Mr. Reynolds. 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

Of course, Latexman ... 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

Yes, thank you BigInch it's what I think too, but I'd like to have an equation behind for reference and sizing purpose. Any idea? Matt17 Process Engineer

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...