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Quick question: Dynamic viscosity

Posted Jun 21, 2017, 3:08 p.m. EDT 2 Replies

Jordan Dargert
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I understand that a solid should have "zero" viscosity, meaning it doesn't flow. Which in turn means that the viscosity is infinite. So many of my materials need me to input a dynamic viscosity value, but how do I indicate to comsol it is infinite? Is there a specific designation? Do I just use an extremely large number?

A quick google search didn't turn up much.

Thank you
2 Replies Last Post Jun 22, 2017, 11:42 a.m. EDT
Mohammad Amin Kazemi
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Posted: 7 years ago Jun 21, 2017, 5:34 p.m. EDT
Jordan
If you define the fluid and solid domains correctly in the physics you are using, Comsol doesn't ask you to enter the viscosity for solids.
Amin,
Jordan If you define the fluid and solid domains correctly in the physics you are using, Comsol doesn't ask you to enter the viscosity for solids. Amin,
Jeff Hiller COMSOL Employee

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Posted: 7 years ago Jun 22, 2017, 11:42 a.m. EDT
Updated: 7 years ago Jun 22, 2017, 2:25 p.m. EDT
Yes, it sounds like the same mistake and solution as in this recent thread:
www.comsol.com/community/forums/general/thread/135133/
Jeff
Yes, it sounds like the same mistake and solution as in this recent thread: https://www.comsol.com/community/forums/general/thread/135133/ Jeff

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