The other (written by A.V.) takes theĪ python version has now also been written by Matthew Partridge at Cranfield University. One takes volume fraction of glycerine as input.
For liquids, it corresponds to the informal concept of thickness. Further refinements from Andreas Volk to density of pure water, and the temperature-dependence of the contraction of the mixture. The viscosity of a fluid is a measure of its resistance to deformation at a given rate. If I fill the same cup with water, for example, the cup will drain much. The rapid equilibrium fluctuations of water molecules are intimately connected to the rheological response molecular motions resetting the local structure. In both cases the fit was chosen to match data from Gregory (table 3 and 7) That is because honeys viscosity is large compared to other liquids viscosities. 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 The diffusion coefficients were then converted to viscosities of erythritolwater particles using the StokesEinstein equation. I'd recommend reading the latter paper first. Kähler (2018) Experiments in Fluids 59 75. 47 3285-3288, with a number of adjustments (see below), which are described in Volk and The viscosity of a liquid measures its resistance to flow, with consequences for hydraulic machinery, locomotion of microorganisms, and flow of blood in vessels. The calculation is based on the parameterisation in Cheng (2008) Ind. Calculate density and viscosity of glycerol/water mixturesĭynamic viscosity of mixture is : Using the chart, simply: Find the temperature you need from the X-axis Draw a vertical line from the X-axis up until it reaches the graph of water viscosity At the intersection, draw a horizontal line going to the Y-axis to find the viscosity you are looking for.