CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

methane combustion in micro-channel

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   May 27, 2020, 22:19
Default methane combustion in micro-channel
Senior Member
Weiqiang Liu
Join Date: Feb 2018
Posts: 277
Rep Power: 6
Weiqiang Liu is on a distinguished road
Hi all,

I am doing a methane combustion simulation in micro channel. it's a two d planar model with very simple velocity inlet, pressure outlet, adiabatic wall and symmetry boundary condition.

gas mechanism, thermal and transport data are imported with chemkin files. I used species transport model in fluent. ALL the material properties are set followed the instructions in literature. Actually I am trying to reproduce results of a published paper. The whole modeling work is so simple that I can finish it in 10 minutes.

I ignite the mixture by patching a 2000K temperature to the whole computation domain like the author did.

However, the whole system becomes unsteady after calculation starts. The maximum temperature reaches 5000K which is the limited value in fluent. The temperature contour becomes a messy.

I tried to reduce URF or step-by-step convergence strategy. However, nothing works.

Since the whole model is so simple. I really can not know what is wrong with my setting. Can anybody who has experience on similar projects give me some suggestions?

I put the screenshot of residuals and temperature contour in this thread.

Best regards

Weiqiang Liu is offline   Reply With Quote


convergence, methane, micro-channel

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
interFoam Micro channel 1988 OpenFOAM Running, Solving & CFD 1 January 25, 2015 13:50
Lean methane catalytic combustion Rajab FLUENT 5 May 1, 2014 07:45
A question about methane combustion hazemsaleem FLUENT 3 March 14, 2014 09:59
FSD combustion model with a mixture of methane and hydrogen for fuel babakflame OpenFOAM Running, Solving & CFD 0 January 14, 2014 11:56
Methane combustion using PPDF CPRL Siemens 0 July 19, 2007 13:28

All times are GMT -4. The time now is 14:12.