Prediction of power station combustors

The application is described of a fully three-dimensional mathematical model to the combustors of two large power station boilers: one front wall-fired and the other corner-fired. Predictions for the flow aerodynamics are compared with experimental data obtained in cold models. Predictions for the c...

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Published inSymposium, International, on Combustion Vol. 21; no. 1; pp. 285 - 292
Main Authors Abbas, A.S., Lockwood, F.C.
Format Journal Article
LanguageEnglish
Published Elsevier Inc 1988
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Abstract The application is described of a fully three-dimensional mathematical model to the combustors of two large power station boilers: one front wall-fired and the other corner-fired. Predictions for the flow aerodynamics are compared with experimental data obtained in cold models. Predictions for the combustion and radiation heat transfer for the corner-fired case are also obtained. The eulerian partial differential equations governing the transport of mass, momentum, energy and turbulent mixing are cast into finite-difference form and solved by an iterative procedure. Closure of the time-averaged equations of the mean flow is obtained with assistance of the k-ε turbulence model. The radiation transfer is handled by the flexible and economic ‘discrete transfer’ technique: special grids and computational procedures are employed to handle the burner inlet, hopper and nose boundary conditions. The isothermal velocity predictions are in fairly good agreement with the model data, leading to the conclusion that predictions of full-scale plant of value to designers should be achievable with current day mathematical models of the present kind.
AbstractList The application is described of a fully three-dimensional mathematical model to the combustors of two large power station boilers: one front wall-fired and the other corner-fired. Predictions for the flow aerodynamics are compared with experimental data obtained in cold models. Predictions for the combustion and radiation heat transfer for the corner-fired case are also obtained. The eulerian partial differential equations governing the transport of mass, momentum, energy and turbulent mixing are cast into finite-difference form and solved by an iterative procedure. Closure of the time-averaged equations of the mean flow is obtained with assistance of the k-ε turbulence model. The radiation transfer is handled by the flexible and economic ‘discrete transfer’ technique: special grids and computational procedures are employed to handle the burner inlet, hopper and nose boundary conditions. The isothermal velocity predictions are in fairly good agreement with the model data, leading to the conclusion that predictions of full-scale plant of value to designers should be achievable with current day mathematical models of the present kind.
Author Lockwood, F.C.
Abbas, A.S.
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Cites_doi 10.1016/0017-9310(72)90076-2
10.1016/0010-2180(84)90085-3
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References Abbas, Lockwood, Salooja (bib1) 1984; 58
(bib10) 1980; Vol. 44
Cooper, Woodward (bib5) 1985
Abou Ellail, Gosman, Lockwood, Megahed (bib2) May 1978
Gosman, Pun, Runchal, Spalding, Wolfshtein (bib8) 1969
Lockwood, Shah (bib11) 1980
Launder, Spalding (bib6) 1972
Hottel, Sarofim (bib12) 1967
Gosman, Lockwood, Megahed, Shah (bib4) Jan. 1980
Truelove (bib13) 1976
Pun, Spalding (bib9) 1967
Carvalho, Lockwood (bib3) 1981
Jones, Launder (bib7) 1972; 15
Launder (10.1016/S0082-0784(88)80256-X_bib6) 1972
Pun (10.1016/S0082-0784(88)80256-X_bib9) 1967
(10.1016/S0082-0784(88)80256-X_bib10) 1980; Vol. 44
Gosman (10.1016/S0082-0784(88)80256-X_bib4) 1980
Gosman (10.1016/S0082-0784(88)80256-X_bib8) 1969
Hottel (10.1016/S0082-0784(88)80256-X_bib12) 1967
Abbas (10.1016/S0082-0784(88)80256-X_bib1) 1984; 58
Jones (10.1016/S0082-0784(88)80256-X_bib7) 1972; 15
Cooper (10.1016/S0082-0784(88)80256-X_bib5) 1985
Lockwood (10.1016/S0082-0784(88)80256-X_bib11) 1980
Truelove (10.1016/S0082-0784(88)80256-X_bib13) 1976
Carvalho (10.1016/S0082-0784(88)80256-X_bib3) 1981
Abou Ellail (10.1016/S0082-0784(88)80256-X_bib2) 1978
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  article-title: A Procedure for Predicting the Velocity and Temperature Distributions in a Confined Steady, Turbulent, Gaseous Diffusion Flame
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  article-title: Velocity Measurements in Model Front Wall-Fired and Tangentially-Fired Boilers, United Kingdom
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