SIMPLE VISCOMETER
SIMPLE VISCOMETER
(OP)
Can someone direct me towards constructing a simple viscometer? TIA
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RE: SIMPLE VISCOMETER
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What are you trying to measure, different viscometer types are better for different situations. Typically you want to provide a flow regime which allows you to simplify the fluid motion equations so that you can derive simple relationships between the parameter you are varying and the parameter you are measuring. You will be looking to reduce problems to one or two dimensional flows, no turbulence.
Also try looking under rheometers.
Regards, HM.
No more things should be presumed to exist than are absolutely necessary - William of Occam
RE: SIMPLE VISCOMETER
RE: SIMPLE VISCOMETER
RE: SIMPLE VISCOMETER
Good luck,
Latexman
RE: SIMPLE VISCOMETER
RE: SIMPLE VISCOMETER
RE: SIMPLE VISCOMETER
It should work for clean and newtonian fluids not reacting chemicaly with the ball or the tube material. Fall times are proportional to centipoises. See, for example,
http://www
RE: SIMPLE VISCOMETER
I've just found a site that may interest you:
http://www.science-projects.com/Viscosity.htm
RE: SIMPLE VISCOMETER
cut the bottom off and drill an appropriate size hole (you'll discover this by experiment)in the cap.
If the bottle is of clear plastic, print a graduated strip and glue it on the side. If not, get a set of scales and a container to catch the fluid in.
Now fill with fluid and time how long to run out a known amount of fluid using water and motor oil, for example (i.e. fluids you know the viscosity for)to obtain a calibration.
You're going to simpley use the drain down time as an indicator of viscosity.
Crude? Yes. Effective? yes.
At a plant in France I witnessed the use of just such an improvised viscometer to plot the polymerisation reaction curve for methyl methacrylate.
From the plot they had to estimate the time at which to quench the reaction.
They had around a 90% success rate.
JMW
www.ViscoAnalyser.com
RE: SIMPLE VISCOMETER
I'm not sure of the details, but I understood they had test apparatus for oil, crude oil, etc., that was basically the drain-it-and-time-it technique above. They usually give oil viscosities in odd units, which I assume was just based on that test method. Isn't there a "Saybolt-seconds" unit of viscosity? Try looking that up.