[Ash Kot]

Hello Everyone,

The 2D LES simulation of combustion estimate heat of reaction source as 9.145e+9, while monitors of temperature, species, continuity, and residuals show no change. The attach files are images of flux reports of mass and energy balances.
Information about the models:

1. Combustion model
   Main: Species Transport, Reactions
   Reactions: Volumetric
   kinetics Solver: CHEMKIN-CFD solver
   Turbulence-Chemistry Interactions: Eddy-Dissipation Concept
   Remaining options are default
2. Turbulence model
   main: Large Eddy Simulation
   Subgrid model: Smagorinsky-Lilly
   LES Model options: Dynamic Stress, Dynamic Energy Flux
   Remaining options are default

In the attached files, monitors of temperature, pressure, and one of the species () does not show any variation and are at consistent values


Tempreture monitor at outlet.png
Here Temperature monitor at outlet show variation however peak and bottom of curve holds difference of only 10°K to 15°K.

NO monitor at outlet.png
() species monitor show constant value of 0.00040089, which is desired.

Pressure monitor at outlet.png
Pressure monitor at outlet does not show any variation at outlet

However the energy and mass balance is far off that expected and make no sense.
Enrgy and Mass Balance.png

Higher order schemes are employed in simulation, but still it is failing to achieve net mass and energy balance at value less than 1% of added heat of reaction.

Perticularly, the heat of reaction source makes no sense and it is obscurely higher than expected. Due to mass and energy imbalances the simulation is yet to converged, while the monitors does not change with any time-step whatsoever.

Does any one face this type of problem while simulation of LES model in 2D domain in co-ordination with Species Transport, Reactions model?