Mathematical Modelling of an Annular Gas Turbine Combustor

Sokolov, K. Yu.; Tumanovskiy, A. G.; Гутник, М. Н.; Sudarev, A. V.; Zakharov, Yu. I.; Winogradov, E. D.

doi:10.1115/93-gt-339

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…Considering some specific features of the G1N-16 combustor design and, also, being guided by the experience gained by the "EST" Ltd specialists in the field of environmental updates of the combustors of other types [7][8][9][10], it was admitted to cony out the GTN-16 combustor modification by two stages. At the 1st stage, the combustor's environmental records were supposed to be improved to the values compliant with the current Russian standards (NOx 5 150 mg/Nm3; CO 5 300 mg/Nm 3 at 15% 02).…”

Section: Lobmentioning

confidence: 99%

Environmental Upgrading of GTN-16 Gas-Pumping Unit Combustion Chamber

Soudarev¹,

Zakharov²,

Vinogradov³

et al. 1997

ASME 1997 Turbo Asia Conference

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The results of research into development of engineering approaches to environmental update of the GTN-16 16 MW gas-pumping unit combustor are presented. The built-in “disc” combustor of the GTN-16 is noted for having a small length and very low hydraulic resistances. The multi-burner low-NOx combustor design was developed in a test rig. The “lean” fuel/air premix combustion was adopted as the basis for the design. The proposed environmental update of the GTN-16 combustor does not bring about any changes in the most costly material-intensive and labour-consuming components of the combustor, viz. casing, frame, liners. No changes were also made in the automatic control system. It is noteworthy that a similar approach is appropriate for the “Turbomotorny Zavod” (Ekaterinburg, Russia) GTN-25 type 25 MW unit.

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Section: Lobmentioning

confidence: 99%

Environmental Upgrading of GTN-16 Gas-Pumping Unit Combustion Chamber

Soudarev¹,

Zakharov²,

Vinogradov³

et al. 1997

ASME 1997 Turbo Asia Conference

Self Cite

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“…A host of articles, both experimental and numerical in nature, are available in the literature on gas turbine combustion studies. The relevant numerical works [1][2][3][4][5] are based on the analysis of either axisymmetric or asymmetric isothermal or reacting flows, and predict mainly the flow structure and temperature profiles in different zones within the combustor along with NO x concentration at the combustor exit at different operating conditions of primary and secondary air flow and fuel -air distribution. The pertinent experimental works [6][7][8][9][10], on the other hand, focus on the influence of some important operating parameters such as the air -fuel ratio, inlet pressure and temperature on the flow and combustion characteristics in the combustor using both liquid and gaseous fuel.…”

Section: Introductionmentioning

confidence: 99%

Energy and exergy balance in a gas turbine combustor

Datta

Som

1999

Proceedings of the Institution of Mechanical Engineers, Part A:

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An energy and exergy balance in the process of spray combustion in a model tubular gas turbine combustor has been made to determine the combustion efficiency and second law efficiency of the process at different operating conditions. The velocity, temperature and species concentration fields in the combustor have been evaluated numerically from a two-phase separated flow model of the spray along with suitable reaction kinetics for the gas phase reaction. A theoretical model of exergy analysis, based on availability transfer and flow availability, has been developed to predict the second law efficiency of the combustion process in the gas turbine combustor. A comparative picture of the functional relationships of combustion efficiency and second law efficiency of the process with the operating parameters of the combustor have been made to throw light on the trade-off between the effectiveness of combustion and the lost work due to thermodynamic irreversibility.

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“…The comparisons reveal that the performance of the density-weighted model is unsatisfactory, although it is preferred for the exothermically reacting flows. Sokolov (1995) used the k-W model to discuss the heat and mass transfer characteristics in an annular combustor with opposite swirling air jets and assessed the dependence of combustor characteristics as a function of geometric and operational parameters.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Flame Structure in Wall-Fired Swirl Flame Combustors

Lee

1996

ASME 1996 Turbo Asia Conference

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A CFD solver CFX is used to analyze the complex behavior of turbulent reacting flow inside the furnace. The flow characteristics for various combustor geometries, fuel/air ratios, and injection velocities, and swirl levels are investigated. Starting with a cylindrical furnace fired with gaseous fuel from a concentric tube burner (both with and without swirl), the mixture-fraction is predicted using the k-ε and RSM turbulence models. The discrepancies between the predictions and measurements are most significant in the flame core of upstream regions. It may stem from inappropriateness of the assumed inlet conditions and the combustion model. However, the calculated results are still qualitatively acceptable. After the validation work of the numerical model, a rectangular furnace with four wall-fired swirling combustors is employed to investigate the effect of neighbouring burners and geometry on combustion characteristics. The central recirculation zone which appeared in the isothermal flowfield vanished in the combustion case. It may be attributed to the fact that the hot gas suddenly expands outward and destroys the recirculation mechanism. Thus, the central flame could not hold. In addition, the four corner flames are stretching against the wall and their shapes are similar to a “cam” profile. The results are intended to assist in the development and validation of a numerical model for predicting furnace flows in wall-fired power plants.

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Mathematical Modelling of an Annular Gas Turbine Combustor

Cited by 5 publications

References 1 publication

Environmental Upgrading of GTN-16 Gas-Pumping Unit Combustion Chamber

Environmental Upgrading of GTN-16 Gas-Pumping Unit Combustion Chamber

Energy and exergy balance in a gas turbine combustor

Three-Dimensional Flame Structure in Wall-Fired Swirl Flame Combustors

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