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Material Properties

Posted Nov 29, 2016, 12:15 p.m. EST Fluid & Heat, Heat Transfer & Phase Change, Materials Version 4.4 2 Replies

Rasaer
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1. How do I know which expression Comsol is using for a particular properties? For dynamic viscosity it shows eta(T[1/K])[Pa*s]. But I want to know the expression.
2. For moisture air, does comsol take care of water content in the air to calculate the viscosity?
2 Replies Last Post Nov 29, 2016, 5:57 p.m. EST
Sohan Birla
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Posted: 8 years ago Nov 29, 2016, 4:12 p.m. EST
Look insides the material properties basic nodes, material properties functions. For example for viscosity of water eta is defined as function of temperature .3799566804-0.021224019151*T^1+1.3604562827E-4*T^2-4.6454090319E-7*T^3+8.9042735735E-10*T^4-9.0790692686E-13*T^5+3.8457331488E-16*T^6

With best wishes,
Sohan
Look insides the material properties basic nodes, material properties functions. For example for viscosity of water eta is defined as function of temperature .3799566804-0.021224019151*T^1+1.3604562827E-4*T^2-4.6454090319E-7*T^3+8.9042735735E-10*T^4-9.0790692686E-13*T^5+3.8457331488E-16*T^6 With best wishes, Sohan
Rasaer
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Posted: 8 years ago Nov 29, 2016, 5:57 p.m. EST
Thanks a lot!
Thanks a lot!

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