A master thesis from Aalborg University
RANS Simulation of Oxy-Natural Gas Combustion
Forfatter(e)
Semester
4. semester
Uddannelse
Udgivelsesår
2010
Afleveret
2010-06-09
Antal sider
79 pages
Abstract
The accuracy of CFD simulations using the RANS approach has been investigated for oxy-natural gas combustion. The OXYFLAM-2 experiments by the IFRF have been used as the test case for the CFD simulations. Symmetry has been used to create quarter meshes of the fur- nace for CFD. Oxy-natural gas chemistry has been investigated with equilibrium cal- culations. The WD mechanism has been used. The JL mechanism failed in FLU- ENT due to program error. A numerical fuel has been developed for the WD mech- anism. A WSGGM applicable to oxy-fuel conditions is used in the simulations. CFD simulations with various models have been performed. All simulations provided good predictions of velocity and turbulence and poor predictions of temperature. Species were predicted to varying accuracies. In- let turbulence intensity has been found to have the greatest eect on simulation ac- curacy.
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