Relation of CARS temperature fields to lean blowout performance in an aircraft gas turbine generic combustor

Switzer, G.; Sturgess, G. J.; Sloan, David G.; Shouse, Dale T.

doi:10.2514/6.1994-3271

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…This combustor is simpli ed from an experimental model. 25 The overall geometrical dimensions are kept the same as the experimental model, but the airjets on the upper and bottom walls are ignored.…”

Section: Numerical Resultsmentioning

confidence: 99%

Mass-Flux-Based Implicit Multigrid Method for Modeling Multidimensional Combustion

Zheng

Liao

Liu

et al. 1997

Journal of Propulsion and Power

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A highly accurate and ef cient method for modeling three-dimensional reacting ows with detailed chemistry is described in this paper. A mass-ux-based governing system is developed for general curvilinear coordinates to obtain compactness of the discretization stencil. The momentum equations are represented by a set of equations of mass uxes across cell interfaces, which are discretized by using staggered grid techniques. A third-order monotone upwind-biased scheme is used for all of the convection terms in the ow equations and species equations to minimize numerical diffusion and capture the sharp gradients existing in ames. The governing equations are divided into a chemical reaction part and a uid ow part, and they are solved in a semicoupled way. An implicit semicoarsening multigrid method combined with a line-distributive relaxation is used as the ow solver. The species equations are discretized by an implicit method and solved in a fully coupled way. Computational results for a con ned co owing diffusion ame show good agreement with experimental data. A detailed three-dimensional calculation of combustion in a gas-turbine combustor with strong swirling in ows is also presented.

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Section: Numerical Resultsmentioning

confidence: 99%

Mass-Flux-Based Implicit Multigrid Method for Modeling Multidimensional Combustion

Zheng

Liao

Liu

et al. 1997

Journal of Propulsion and Power

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“…In this case, a simplified combustor from Switzer et al (1994) is used. The combustor length is about 0.6 meters.…”

Section: Formation In a Gas Turbine Combustormentioning

confidence: 99%

NO_xPrediction in 3-D Turbulent Diffusion Flames by Using Implicit Multigrid Methods

Liao

Liu

Zheng

et al. 1996

Combustion Science and Technology

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Modeling of the nitric oxide formation in the turbulent non premixed methane and syngas (CO/H,/N,) diffusion flame is studied using an implicit time-stepping and multigrid technique. The chemical kinetic model for both methane-air in a sudden-expansion combustor and syngasair combustion in a laboratory combustor as wellas in a gas turbine combustor is assumed to have 49 species and 229 finite-rate, reversible reaction steps. The standard k-£ turbulence model and the algebraic correlation closure model are applied to close the time-averaged Na vier-Stokes and species equations (Liao et aI., 1995)respectively. The computation requires about 250 time steps to reduce the residual by 3 orders of magnitude for the 3-D turbulent methane-air diffusion flame case on a 34 x 18 x 18 grid, which shows convergence rate is much faster than conventional iterative methods. Computational results with detailed chemistry are exhibited and some of them are compared with experimental data. Qualitative agreement between the computational results and experimental results is observed. A three-dimensional calculation for a gas turbine combustor shows the potential of this method for modeling the pollution formation in practical flows.

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“…Several studies of different types of flames have proven its high capability [15][16][17][18]. Today, the CARS technique using the N 2 molecule as a temperature indicator is routinely used even in harsh combustion environments such as IC engines, high-pressure burners and gas turbines [19][20][21][22][23][24]. In order to probe temperatures in a technical relevant combustion chamber, optical access is always restricted by the need for very small windows.…”

Section: Introductionmentioning

confidence: 99%

Non-intrusive gas-phase thermometry for industrial oxy-fuel burners

Tröger¹,

Seeger²

2015

Naučno-teh. vestn. inf. tehnol. meh. opt.

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Relation of CARS temperature fields to lean blowout performance in an aircraft gas turbine generic combustor

Cited by 7 publications

References 10 publications

Mass-Flux-Based Implicit Multigrid Method for Modeling Multidimensional Combustion

Mass-Flux-Based Implicit Multigrid Method for Modeling Multidimensional Combustion

NO_xPrediction in 3-D Turbulent Diffusion Flames by Using Implicit Multigrid Methods

Non-intrusive gas-phase thermometry for industrial oxy-fuel burners

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Relation of CARS temperature fields to lean blowout performance in an aircraft gas turbine generic combustor

Cited by 7 publications

References 10 publications

Mass-Flux-Based Implicit Multigrid Method for Modeling Multidimensional Combustion

Mass-Flux-Based Implicit Multigrid Method for Modeling Multidimensional Combustion

NOxPrediction in 3-D Turbulent Diffusion Flames by Using Implicit Multigrid Methods

Non-intrusive gas-phase thermometry for industrial oxy-fuel burners

Contact Info

Product

Resources

About

NO_xPrediction in 3-D Turbulent Diffusion Flames by Using Implicit Multigrid Methods