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Difference between Molecular & Dynamic Viscosity? |
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August 31, 2020, 14:21 |
Difference between Molecular & Dynamic Viscosity?
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#1 |
New Member
Bruna Conrado
Join Date: Feb 2020
Posts: 3
Rep Power: 6 |
Hi everyone,
Sorry if this has been posted before, but I wasn't able to find anything in the forums. I'm curently simulating the effect of the shear rate inside a 4L reactor on my shear-thinning fluid. I'm using the Multiple Reference Frame model and monitoring the volume average of the Strain Rate on FLUENT as a report variable/plot. I noticed however that Molecular Viscosity is also one of the report variables available. What is the difference between this and Dynamic Viscosity? I couldn't seem to find anything on the manual nor on Google. Are they the same? If not, is there a correlation between them? Also, is there a way to make Dynamic Viscosity a report variable? It's only available on CFD Post, it seems. Thank you! |
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September 1, 2020, 12:56 |
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#2 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,675
Rep Power: 66 |
Molecular viscosity is more popularly called the kinematic viscosity. Kinematic/molecular viscosity (greek letter nu) differs from the dynamic viscosity (greek letter mu) by a factor of the density for normal fluids. For nerdy details, see the Wiki on viscosity.
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