Menu

Discussion Forum

New Discussion
Filtra

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.

Cyclical calculation of fluid flow

Posted 31 gen 2017, 14:51 GMT-5 Fluid & Heat, Chemical Reaction Engineering Version 5.2a 0 Replies

Chaoao Shi
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

In my dielectric boundary discharge (DBD) model, electrostatics module and "transport of diluted species" module are used to calculate the electric field. Then, the results provide volume force (c*es.Ex & c*es.Ey) to the laminar flow module which calculates the velocity.

I need to simulate my model for at least 50 AC cycles (1ms per cycle) to get a steady fluid flow. Since the electric field reaches the steady state in a few cycles, I am trying to find a way to save the simulation time. My basic idea is to simulate the electric field for 10 cycles ( for it to reach a quasi-steady state), and then use the results of the last cycle to CYCLICALLY calculate the fluid flow.

For example, I use the results of electric field from 9ms to 10ms to calculate the fluid flow in 9ms~10ms, 10ms~11ms, 11ms~12ms, 12ms~13ms and so on. (Variables in electric field from 0 to 9ms are used to calculate the fluid flow from 0 to 9ms)

I tried it in my model but failed. It seems that the volume force is 0 if I use previous results of electric field to calculate the fluid flow.

I really appreciate if anyone can give some comments or advice.
0 Replies Last Post 31 gen 2017, 14:51 GMT-5
COMSOL Moderator

Hello Chaoao Shi

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