Menu

Discussion Forum

New Discussion
Filtra

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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.

No streamline is shown when "Magnitude controlled" streamline plotting

Posted 21 feb 2013, 17:24 GMT-5 Fluid & Heat, Computational Fluid Dynamics (CFD), Microfluidics Version 4.3 0 Replies

Jaesung Lee
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi,

I've got something I can't figure out during a simple laminar flow simulation with COMSOL 4.3, so I ask anyone's help for this problem.

The problem is that "sometimes" I cannot see any streamline when I used "magnitude controlled" logic for 2D streamline plot. It happens randomly among exact same simulations, but different geometry. I tried to adjust the density of streamline positioning , but didn't work. Once there was no streamline, I couldn't get any streamline despite of any actions I did.

However, if I change the plot logic from "magnitude controlled" to "uniform density" or "start point controlled", I can get the streamline plot. I have no idea what's going on my simulations...

My system is shallow approximated 2-D geometry laminar flow model. The channel consists of some non-circular posts and channel area. The boundary conditions consists periodic flow condition on both sides of the channel, one inlet, one outlet, and no-slip condition on rest of the wall in the geometry. Inlet condition is "average velocity" and outlet condition is "pressure, no viscous stress". Mesh size is "extremely fine" for fluid mechanics.

Does anyone have idea about this problem or any suggestion?

Thanks,
Jaesung

0 Replies Last Post 21 feb 2013, 17:24 GMT-5
COMSOL Moderator

Hello Jaesung Lee

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.

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