8th European Postgraduate Fluid Dynamics Conference

6th – 9th July 2016
Warsaw, Poland

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Turbulent combustion modelling with OpenFOAM: simulation of the non-premixed syngas flame

Michał T. Lewandowski1, Jacek Pozorski2
1Institute of Fluid-Flow Machinery, Gdańsk University of Technology
2Institute of Fluid-Flow Machinery
Turbulent combustion is a phenomenon of multi-scale nature and its modelling is a challenge, mainly due to turbulence and complex chemical kinetics. The key problem is related to the unknown expression for the mean reaction rate. The modelling based on the physical analysis of the phenomena is needed. Those methods are commonly referred to as combustion models or more precisely turbulence-chemistry interaction models.

In this work, we present numerical simulations of the turbulent non-premixed syngas flame in the configuration of axisymmetric jet also known as Sandia CHN flame B. The assessment of two turbulence-chemistry interaction models has been investigated using opensource software OpenFOAM. The Partially Stirred Reactor model and the Eddy Dissipation Concept have been tested together with different chemical kinetic schemes. Turbulence closure has been obtained with selected versions of the two equation \(k-\epsilon \) model. Large Eddy Simulation will also be
Keywords: Combustion, Turbulence, Applied fluid dynamics
Figure 1: Temperature distribution along the axis for CHN flame B obtained with PaSR model FFR chemical kinetic scheme and four different versions of \(k-\epsilon \) turbulence