This does not yet include AV's latest tweaks (M3 above) - however the differences for most applications should be quite minor. The other (written by A.V.) takes theĪ python version has now also been written by Matthew Partridge at Cranfield University. A 1.8 billion, privately-held company, Swagelok Company designs, manufactures, and delivers an expanding range of the highest quality fluid system products. One takes volume fraction of glycerine as input. Viscosity changes with temperature, and Viscosity Index (VI) tells you how much.
Further refinements from Andreas Volk to density of pure water, and the temperature-dependence of the contraction of the mixture. In both cases the fit was chosen to match data from Gregory (table 3 and 7) Andreas Volk pointed out that the density calculation can be made more accurate by (i) accounting for the volume contraction of the mixture (ii) adjusting the fit for the density of pure glycerine as a function of temperature. Thanks to Paul Debue for pointing this out. The mixture should use the glycerine fraction by VOLUME and not by mass. Density calculation has been changed: equation 25 in Cheng's paper to compute the density of I'd recommend reading the latter paper first. Fill in two values, press the CALCULATE button and the third value will be calculated.
Kähler (2018) Experiments in Fluids 59 75. 47 3285-3288, with a number of adjustments (see below), which are described in Volk and The calculation is based on the parameterisation in Cheng (2008) Ind.
Calculate density and viscosity of glycerol/water mixturesĭynamic viscosity of mixture is :
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