Experimental combustion chamber simulation at transient regimes

Gherman, Bogdan; Mălăel, Ion; Florean, Florin; Porumbel, Ionut

doi:10.1051/e3sconf/20198502006

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…The EDM combustion model has been chosen because of its simplicity and robust performance in predicting turbulent reacting flows. Because of these, the model is very often used in the realization of technical application numerical simulations [18][19][20][21].…”

Section: Micro Gas Turbine For Power Generationmentioning

confidence: 99%

CFD Application for Gas Turbine Combustion Simulations

Vilag¹,

Vilag²,

Carlanescu³

et al. 2020

Computational Fluid Dynamics Simulations

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The current chapter presents the use of computational fluid dynamics (CFD) for simulating the combustion process taking place in gas turbines. The chapter is based on examples and results from a series of applications developed as part of the research performed by the authors in national and European projects. There are envisaged topics like flame stability, pollutant emission prediction, and alternative fuels in the context of aviation and industrial gas turbines, growing demands for lower fuel consumption, lower emissions, and overall sustainability of such energetic machines. Details on the available numerical models and computational tools are given along with the expectation for further developing CFD techniques in the field. The chapter includes also some comparison between theoretical, numerical, and experimental results.

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Section: Micro Gas Turbine For Power Generationmentioning

confidence: 99%

CFD Application for Gas Turbine Combustion Simulations

Vilag¹,

Vilag²,

Carlanescu³

et al. 2020

Computational Fluid Dynamics Simulations

Self Cite

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“…The result showed that combined swirler exhibited higher maximum velocity magnitude typically at the radial position between 0.1 to 0.3 m compared to axial swirler. The higher velocity magnitude promoted the higher mixing rate as well as reduced the blowoff tendencies[20]. Those aforementioned characteristics increase the probability of complete reaction to occur.…”

mentioning

confidence: 97%

CFD Simulation Analysis of Non-Premixed Combustion using a Novel Axial-Radial Combined Swirler for Emission Reduction Enhancement

Samiran

Mansor

Rashid

et al. 2023

CFDL

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Combustion industries for many decades dealing with the issues in reducing the emissions without affecting the performance of combustion. The present study aims to investigate the performance of swirler mechanism which combining between both axial and radial types to reduce emissions and increase the mixing process via the non-premixed method. Each of axial and radial swirler consisted with 8 blades vane. Swirl angle for radial swirler is 35° and inclination angle for axial swirler is 15°. The swirler is designed using Solidworks software package and CFD analysis was then performed using ANSYS Fluent software package. The fuel used is liquefied petroleum gas (LPG) gas which contained 30% propane and 70% butane. The turbulence model standard k-epsilon was used in this study. The result found that the combined swirler was capable to reduce CO emission as the complete reaction into CO2 component was higher. This is due to the broader region of temperature and higher velocity magnitude produced by the combined swirler. However, the maximum temperature result for axial swirler was higher than the combined swirler. As a recommendation, the inclination blade angle in the axial swirler of the combined swirler should be increased to increase the temperature value

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Micro gas turbine combustion chamber CFD modelling

Mangra

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The interest in micro gas turbines has been steadily increasing. As a result, the researchers’ attention has been focused on obtaining optimal configurations for micro gas turbines depending on the applications in which they are used. Micro gas turbines are suitable for both civil and military applications. Presently, they are often used in the development of Unmanned Air Vehicles (UAVs). Micro gas turbines have the following advantages: a wider range of options regarding the used fuel and a significant system weight reduction. This paper presents the CFD modelling results regarding an annular type combustion chamber. This combustion chamber is part of a 80 daN micro gas turbine, destined to equip a small scale multifunctional airplane. The combustion chamber is equipped with eight pressure-swirl injectors, using Jet-A as fuel. A 3D RANS numerical integration of the Navier-Stokes equations has been carried out, using an Eddy Dissipation combustion Model (EDM) and the k-ε turbulence model, implemented in a numerical simulation conducted using the commercial software ANSYS CFX. An unstructured computational grid, generated using ICEM CFD, has been used. The fuel is injected directly in the fire tube in the form of droplets. The initial fuel droplet’s diameter has been considered to be 50µm and the fuel spraying cone angle has been set at 90°. The fuel droplet break-up and evaporation processes have been simulated using numerical models available in ANSYS CFX library. A two steps reaction mechanism, which takes into consideration the formation of NO, has been used. The results thus obtained are encouraging. The flame developed in the central area of the fire tube, its walls thus not being subjected to high temperatures. Also, the maximum temperatures were obtained in the primary zone of the fire tube. The temperature then decreased in the fire tube’s secondary zone and dilution zone, until it reached an average value of 1200 K at the combustion chamber exit. Regarding the pressure, based on the numerical simulation results, a 5% pressure loss has been obtained. The numerical results will be validated by conducting combustion tests on a testing rig which will be developed inside the institute’s Combustion Chamber Laboratory.

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Experimental combustion chamber simulation at transient regimes

Cited by 4 publications

References 2 publications

CFD Application for Gas Turbine Combustion Simulations

CFD Application for Gas Turbine Combustion Simulations

CFD Simulation Analysis of Non-Premixed Combustion using a Novel Axial-Radial Combined Swirler for Emission Reduction Enhancement

Micro gas turbine combustion chamber CFD modelling

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