Multi-objective CFD optimizations of water spray injection in gas-turbine combustors

Amani, E.; Akbari, Mansor; Shahpouri, Saeid

doi:10.1016/j.fuel.2018.04.093

Cited by 29 publications

(5 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Motsamai 1 , et al used CFD design runs with a Dynamic-Q optimization algorithm to improve the exit temperature profile of a combustor. Several studies [2][3][4][5] have used Reynolds Averaged Navier Stokes (RANS) based CFD simulations combined with the Design of Experiments (DOE) algorithms to improve combustor performance by varying geometric and operational design variables. Automated CFD design study workflow presented by Briones 6 , et al and Thomas 7 , et al is used for the design space exploration and optimization of a gas turbine combustor.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Response Surface Based Preliminary Design Methodologies for a Gas Turbine Combustor

Mahto,

Chakravarthy

2024

Def. Sc. J.

View full text Add to dashboard Cite

Preliminary design of gas turbine combustor is a multi-objective optimization problem. The methodology to be used at the preliminary design stage depends on the freedom of design choices available. In this article, we explore three preliminary design methodologies for gas turbine combustor - M1: combustion liner design for a given casing; M2: combustion liner design without the casing and M3: coupled design of combustion liner and casing. A workflow for the automated design space exploration of gas turbine combustor using response surface methodology is presented. Computational fluid dynamics studies along with central composite design for design of experiments and genetic aggregation for response surface generation are used to quantify the combustor performance in design space. Comparison of three different design methodologies (M1, M2 and M3) is made to show how the choice of design methodology changes the available design space and limits/expands combustor performance. Candidate optimal designs and associated trade-offs from the optimization study are also presented. This study can aid combustor design engineers choose the most suitable preliminary design methodology for their specific use case.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparison of Response Surface Based Preliminary Design Methodologies for a Gas Turbine Combustor

Mahto,

Chakravarthy

2024

Def. Sc. J.

View full text Add to dashboard Cite

show abstract

“…Combustion is currently used as the main method for the production of energy from fossil fuels. However, during combustion, harmful substances are formed, such as carbon monoxide, nitrogen oxides, soot, unburned hydrocarbons, and others [1][2][3]. These substances are hazardous to human health and the environment.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Numerical Methods for Simulating N-Heptane Combustion with Steam Additive

et al. 2022

View full text Add to dashboard Cite

Currently, thermal power plants operating on hydrocarbon fuels (gas, fuel oil, peat, shale, etc.) are one of the main sources of electricity. An effective and promising method for suppressing harmful emissions (NOx, carbon oxides, soot) from the combustion of fossil fuels is the injection of steam into the combustion chamber. The influence of various mathematical submodels was studied on the accuracy of the numerical simulation of the process of n-heptane combustion in a laboratory burner with steam additive to the reaction zone as a promising chemical engineering method for the disposal of substandard liquid fuels and combustible waste with the production of thermal energy. The problem was solved in a three-dimensional stationary formulation. Systematic verification of these submodels, and a comparison of the results of the calculation with the experimental data obtained were carried out. The comparison with the experimental data was carried out for gas components and temperature distribution at the burner outlet; high agreement of the results was achieved. Optimal submodels of the methodology for calculating the process of fuel combustion in a jet of steam were determined. The best agreement with the experiment data was obtained using the EDC model in combination with a mechanism consisting of 60 components and 305 elementary reactions. More correct simulation results were obtained using the RSM turbulence model and the DO radiation model.

show abstract

“…Farokhipour et al (2018) used an Eulerian-Lagrangian model is implemented to study the process of water spray injection inside gas turbine combustors. Amani et al (2018) studied the water spray injection process in a natural-gas-fueled gas turbine combustor numerically using an Eulerian-Lagrangian formulation, and the combined effect of different design variables, including the swirl number, water injection mass flow rate, injection partitioning between a pre-and a post-flame injector, and injection direction, are investigated on several combustor performance objectives by systematic multi-objective optimizations.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Water Vapor Injection in the Combustion Chamber to Reduce Gas Turbine Fuel Consumption

Sharafodini

Habibi²,

Pirmohammadi

2020

JAFM

View full text Add to dashboard Cite

In this study, the effect of water vapor injection on the flow pattern, temperature contamination and emission of pollutants has been studied. Also, the impact of the spray angle on the axis has been investigated and finally, the effect of fuel type and geometry on the flow variables has been investigated. The results were compared with numerical simulations performed by other researchers and the results showed that they are qualitatively acceptable. The purpose of this work is to investigate the effect of the amount of water vapor on flame and NOx released from combustion. The results showed that with the percentage of water injected, there were significant changes in the temperature and pressure contour patterns of the combustion chamber. The results showed that with the percentage of water injected, there were significant changes in the temperature and pressure contour patterns of the combustion chamber. The results showed that the overall efficiency of the Brighton cycle can be increased in the non-injecting mode from 91% to 95% for the combustion chamber mode by injecting 8% water vapor. Also, an increase of more than 8% of water vapor will not have much effect on efficiency of gas turbine and reduce fuel consumption.

show abstract

Multi-objective CFD optimizations of water spray injection in gas-turbine combustors

Cited by 29 publications

References 43 publications

Comparison of Response Surface Based Preliminary Design Methodologies for a Gas Turbine Combustor

Comparison of Response Surface Based Preliminary Design Methodologies for a Gas Turbine Combustor

Comparative Analysis of Numerical Methods for Simulating N-Heptane Combustion with Steam Additive

Numerical Study of Water Vapor Injection in the Combustion Chamber to Reduce Gas Turbine Fuel Consumption

Contact Info

Product

Resources

About