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 The information provided may be out of date.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.
osmotic pressure
Posted 29 ott 2013, 12:45 GMT-4 Fluid & Heat, Computational Fluid Dynamics (CFD), Chemical Reaction Engineering Version 4.2a 1 Reply
Please login with a confirmed email address before reporting spam
we're two Politecnico di Milano's students using Comsol software (4.2a version) for our master thesis.
On the Comsol webpage we've found an article of S. A. Conrad "Finite Element Analysis of Fluid and Solute Transport in Hemodiafiltration Membranes" and we've tried to implement the Landis-Pappenheimer equation as a volume force in the Brinkman equation (in order to include the effect of osmotic pressure).
Our problem is the fact that if we write the volume force expression as a function of proteine's concentration, the result is a warning. Can we insert only constant values of volume force?
Thanks,
Roberta and Manuela
Hello Roberta Bembo
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
in Comsol everywhere you can type a number you can insert an equation.
Where have you defined the protein concentration? Is it a variable?
Please explain better which physics are you using and which kind of warning Comsol presents.
--
Marino Miccio
Chemical Engineer
---
Visit the channel www.youtube.com/ScuolaTech