Menu

Discussion Forum

New Discussion
Filter

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.

Oscillations in streamer modelling at high voltage

Posted Aug 22, 2019, 10:41 a.m. EDT Plasma Physics Version 5.4 0 Replies

S J
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi,

I am trying to model a streamer discharge in 2D (axisymmetric configuration) between two parallel plane electrodes (inter lectrode distance = 1cm) at atmospheric pressure and high voltage (50kV) using Plasma Module. Here anode has voltage of 50 kV and cathode is grounded. A gaussian for electrons is placed initially at the anode (z=1cm). Wall BC is applied at anode (including migrative effects) and zero flux BC at both cathode and far boundary. (M+=>M) at both electrodes and (M-=>e+M) at anode are the surface reactions. However, oscillations start to appear right next to the anode as the streamer propagates from anode towards cathode as seen in the contour plot for electron density (files in attachment).

Can somebody help me with finding the cause for these oscillations?

Thanks,

SJ

0 Replies Last Post Aug 22, 2019, 10:41 a.m. EDT
COMSOL Moderator

Hello S J

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