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.

Defining Variable in Domain with respect to a Boundary Normal and Tangential direction

Mohd Jamil Mohamed Mokhtarudin

Please login with a confirmed email address before reporting spam

Hello,

I want to define a variable to be used in the geometry domain. This variable is a function of the direction of the tangent or normal of a boundary. I know from Comsol that the normal of a boundary is defined as nX, nY, and nZ for the material coordinates. I want to define a variable, say Young's Modulus E, that is only acted along the normal with respect to the boundary (i.e. E is anisotropic and acted along the normal of the boundary, and zero for other directions).

It is easy to define if the geometry is simple, such as a cube or a cylinder, by just using a number or by defining cylindrical coordinate system. But my geometry is of irregular shape. Can anybody help me on how to define the domain variable with respect to a boundary normal or tangential direction? Perhaps using model couplings?

Thank you, Jamil


1 Reply Last Post 20 nov. 2017, 06:13 UTC−5
COMSOL Moderator

Hello Mohd Jamil Mohamed Mokhtarudin

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.


Please login with a confirmed email address before reporting spam

Posted: 7 years ago 20 nov. 2017, 06:13 UTC−5

Hi Jamil

Did you manage to solve this? I'm having the same problem.

Hi Jamil Did you manage to solve this? I'm having the same problem.

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.