|December 15, 2010, 19:00||
Biomass Pellet Combustion - problem with CO
Join Date: Dec 2010
Posts: 8Rep Power: 8
I modell Biomass pellet combustion in domestic furnace with ANSYS Fluent v12.1 using species transport (Finite Rate/Eddy dissipation) and Discrete Phase Model (DPM). Combustible particles (biomass pellets) are injected as a group of particles in model domain, and combustion model is defined with three reactions (two volumetric: 1. CxHyOz + kO2 = xCO + y/2H2O + jN2; 2. CO + 0,5O2 = CO2; and one particle surface reaction: 3. C(s) + 0,5O2 = CO).
My problem is small mole fraction of CO in outflow of domain, although experimental results show oposite. It seems that all CO burn to CO2 in my model. I try to change Preexponential Factor and Activation Energy for reaction 2, but nothing happens. Any ideas, where I'm wrong?
Tnx in advance!
|Thread||Thread Starter||Forum||Replies||Last Post|
|Problem on EDC model for coal combustion||lei||FLUENT||4||September 3, 2015 09:39|
|hel (turbulent viscosity ratio limited) for supersonic combustion problem||omar.2002bh||FLUENT||2||September 5, 2012 11:04|
|A problem with combustion||Luk||Main CFD Forum||1||April 28, 2008 09:55|
|Combustion problem||rupal||CFX||0||April 21, 2008 05:29|
|Coal Combustion Benchmark problem||anand||CFX||0||February 20, 2008 01:24|