Menu

Discussion Forum

New Discussion
Filtern

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Dynamic viscosity

Posted 21.12.2021, 13:36 GMT-5 General Version 5.5 1 Reply

Prakash Singh
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

I am trying to add a blank solid material, but here it is asking for dynamic viscosity. what to do?

1 Reply Last Post 22.12.2021, 07:06 GMT-5
Magnus Ringh COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 3 years ago 22.12.2021, 07:06 GMT-5

Hi,

The Material nodes asks for the physical properties required by the physics interfaces that are active on the same domains (or boundaries). In this case, it seems that you have a fluid-flow interface in your model (which suggests that that domain is not a solid). If you change its setting for Dynamic viscosity in its Fluid Properties node's Settings window to User defined (from From material), the request for dynamic viscosity will disappear from the Material node, and you can enter a value or expression for the dynamic viscosity directly in the fluid-flow interface's Fluid Properties node.

Best regards,

Magnus

Hi, The **Material** nodes asks for the physical properties required by the physics interfaces that are active on the same domains (or boundaries). In this case, it seems that you have a fluid-flow interface in your model (which suggests that that domain is not a solid). If you change its setting for **Dynamic viscosity** in its **Fluid Properties** node's Settings window to **User defined** (from **From material**), the request for dynamic viscosity will disappear from the **Material** node, and you can enter a value or expression for the dynamic viscosity directly in the fluid-flow interface's **Fluid Properties** node. Best regards, Magnus

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content