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.

Time dependent Hinge fluid interaction

Posted 21.04.2015, 01:06 GMT-4 Fluid & Heat, Modeling Tools & Definitions, Parameters, Variables, & Functions 0 Replies

Charlott Vallon
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

I am modeling an artificial heart valve that utilizes hinges as seen in the file included. In the human body the valve hinges are passive which means they open and close depending on varying blood flow. In my model, I can get the hinges to move back and forth if I apply a pressure to one side of the hinge, however, as soon as I add a steady fluid flow I get the following error. "Failed to find consistent initial values.
Segregated group 2
Attempt to evaluate real square root of negative number."


Eventually I would like to add a time -dependent fluid flow that mimics blood flow through the heart but for now I am trying to get the simplest case with steady flow to provide an answer.

I would really appreciate any suggestions on how to precede with this kind of set up.

Thanks in advance!

Charlott

Attachments:

0 Replies Last Post 21.04.2015, 01:06 GMT-4
COMSOL Moderator

Hello Charlott Vallon

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