bingbong08
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- TL;DR
- What does the Andrade equation for relating viscosity and temperature actually show?
Hi all,
I was looking into how the temperature of a viscous fluid (glycerol, for instance) affects the terminal velocity of a sphere falling through and deriving a mathematical relationship. I know that the viscosity and terminal velocity can be related through Stoke's law, but had a bit of trouble with the temperature bit.
I found the following equation:
But couldn't find any info on what A and B actually are, apart from being 'fundamental constants'. What exactly are those constants, and how do I find their values for certain fluids? Or are I overcomplicating this, and shouldn't be using this equation at all for finding the temperature-dependence of terminal velocity?
Thanks!
I was looking into how the temperature of a viscous fluid (glycerol, for instance) affects the terminal velocity of a sphere falling through and deriving a mathematical relationship. I know that the viscosity and terminal velocity can be related through Stoke's law, but had a bit of trouble with the temperature bit.
I found the following equation:
But couldn't find any info on what A and B actually are, apart from being 'fundamental constants'. What exactly are those constants, and how do I find their values for certain fluids? Or are I overcomplicating this, and shouldn't be using this equation at all for finding the temperature-dependence of terminal velocity?
Thanks!