Simulation of pollutant formation in a gas-turbine combustor using unsteady flamelets

Barths, H.; Peters, N.; Brehm, N.; Mäck, A.; Pfitzner, Michael; Smiljanovski, V.

doi:10.1016/s0082-0784(98)80026-x

Cited by 67 publications

(22 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly the effective thermal flux and species flux have been calculated as the sum of the viscous and turbulent fluxes in Eqs. (4,5). The turbulent fluxes, in turn, have been calculated using the gradient diffusion hypothesis and through introduced turbulent viscosity and turbulent thermal diffusivity.…”

Section: Governing Equationsmentioning

confidence: 99%

“…We assign the acronym 3 (2010) SBF to this model, which is formed by the first letters of the developers' last names. 4 to describe the reaction of the volatiles released from the pyrolysis of coal and gasification of char particles. The 3 global steps and corresponding reaction rates are given in Table 4 in Appendix B.…”

Section: -Step/5-species Kinetic Model -Sbfmentioning

confidence: 99%

See 1 more Smart Citation

A Comparative Study of Eight Finite-Rate Chemistry Kinetics for Co/H₂Combustion

Marzouk

Huckaby

2010

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

ABSTRACT:We compare the performance and computational cost of 8 kinetic models (3 global and 5 elementary) that describe the finite-rate chemistry of syngas combustion. We apply them in simulating a turbulent jet flame with syngas diluted by 30% nitrogen. We model the turbulence by a modified k-epsilon model and the turbulence-chemistry interaction by the partially stirred reactor approach. To integrate the chemistry equations, we nominally use explicit fifth-order embedded Runge-Kutta ODE solver. But semi-implicit Bulirsch-Stoer and implicit Euler were also used. The computational time depends on the number of reaction steps and the ODE solver. Five models overpredict the maximum flame temperature (by 200 K-320 K). Two models underpredict it by 240 K and 580 K. The global model that is based on the Westbrook-Dryer (1981) model for hydrocarbon fuels gives the best agreement with measurements, and also has low computational demand. Therefore, it is recommended for modeling turbulent syngas flames.

show abstract

Section: Governing Equationsmentioning

confidence: 99%

Section: -Step/5-species Kinetic Model -Sbfmentioning

confidence: 99%

A Comparative Study of Eight Finite-Rate Chemistry Kinetics for Co/H₂Combustion

Marzouk

Huckaby

2010

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

show abstract

“…The EPFM model was first applied to a gas turbine combustion chamber at steady state using n-heptane as model fuel [16]. Pollutants formation was investigated by introducing Eulerian particles transported unsteadily in the steady state flow field computed with a CFD code.…”

Section: Numerical Model 231 Model Descriptionmentioning

confidence: 99%

Effect of fuel mixture on moderate and intense low oxygen dilution combustion

Dally

Riesmeier

Peters

2004

Combustion and Flame

223

View full text Add to dashboard Cite

“…The results were shown to improve if an unsteady model was used. Barths et al [12] proposed a more general Eulerian particle flamelet model (EPFM) that solves an Eulerian particle transport equation for probability to find the multiple flamelets, and successfully obtained the NO x and soot formation in a gas turbine combustor. More recently, the model was applied to solve the low oxygen dilution combustion [13].…”

Section: Introductionmentioning

confidence: 99%