I now just realized one thing... Both THF:Water and MeOH are volatile solvents. Could the evaporation that happened between the measurement and following weighting explain the discrepancies? Evaporation increases when the surface area is bigger, and I used bigger collecting flasks when the flow...
Oh, ideed, I never thought of that. The only thing that still "annoys" me is the calculator saying that I have turbulent flows:
But what you said indeed makes sense, or better, it is the only thing that makes sense, it explains the discrepancies.
So, I can say that this problem is solved :)...
Thank you so much for your time and answer! :)
Yeah, I think one of my colleagues measured it back in London where I did the research work. The capillaries where purchased from a company...
Ok ,I'm back :D!
I provide the tables that I have done with the measured flow rates and the predicted ones using the Haggen-Poiseuille equation. The values with the capillary of 0,127mm and 150mm are almost a perfect match. The 0,127mm and 60mm are good too and then I starts getting worse with...
Thank you very much for your answer! :)
Good question, I really don't know but I wil search if THF:Water (3:2) is Newtonian or non Newtonion.
When I arrive home in the afternoon, I write all the data organised!
I have more data to using MeOH as a solvent which is a Newtonian fluid and it...
Hi!
I'm a student of pharmaceutical sciences which means that my physics knowledge isn’t that great ahah, if I say a big mistake in the following text, a thousand "sorrys" ahah:
So, I am now writing my master thesis and currently I am finishing writing a part where fluid mechanics are...