|
[Sponsors] |
Flamelet gives faster chemistry than ED-model |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
November 30, 2011, 11:01 |
Flamelet gives faster chemistry than ED-model
|
#1 |
New Member
Join Date: Nov 2009
Posts: 11
Rep Power: 17 |
Hi,
I am simulating a turbulent spray in a hot coflow in an open area. The domain is a 2D axisymmetric domain. I use the realizable k-epsilon turbulence model with enhanced wall treatment for the flow near the nozzle. The fuel that I use is (liquid) ethanol and the atomizer is a pressure-swirl-atomizer. I have done simulations with the ED-model (1 step reaction) and also with the Flamelet model (57 species). The problem is that the lift off from the nozzle is shorter for the flamelet model than for the ED-model. I expected the ED-model to be faster but this is not happening. The spray is evaporating faster, the turbulence is higher and the combustion is faster. I have only changed the combustion model from the ED-model to the Flamelet model. Has anybody an idea what can cause the faster combustion for the flamelet model? Regards, Champshof |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Superlinear speedup in OpenFOAM 13 | msrinath80 | OpenFOAM Running, Solving & CFD | 18 | March 3, 2015 06:36 |
LES and combustion model | Margherita Cadorin | CFX | 0 | October 29, 2008 06:24 |
FOAM chemistry model algorithmmsha | msha | OpenFOAM Running, Solving & CFD | 1 | July 14, 2008 03:21 |
Simulate a cylindrical combustor burning methane CH4 in air using the finiterate chemistry model | zou_mo | OpenFOAM Running, Solving & CFD | 3 | March 30, 2006 00:50 |
unsteady flamelet models | dean | Main CFD Forum | 2 | October 5, 2005 20:22 |