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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
CFD ANALYSIS OF THE SWIRL NUMBER INFLUENCE IN THE FORMATION OF RECIRCULATION ZONES IN A COMBUSTOR FOR GAS TURBINE APPLICATION
Submission Author:
Arthur França Martins , SP
Co-Authors:
Arthur França Martins, Diego Paes de Andrade Peña, Dener Silva de Almeida
Presenter: Arthur França Martins
doi://10.26678/ABCM.ENCIT2020.CIT20-0407
Abstract
Gas turbines are widely used for power generation and aeronautical propulsion. These equipments make use of swirler devices to obtain recirculation structures in the flow by adding a tangential velocity component. The present work aims to, numerically, analyze combustion instabilities, obtained experimentally through a laboratorial scale gas turbine combustor. Such analysis consists in creating and simulating a CAD model via CFD, to better understand the recirculation structures formed within it, as well as the factors that led to combustion instabilities generation in the studied chamber. Results indicate that, mostly, high swirl numbers lead to more homogenous recirculation structures, which are preponderant to attenuate the pressure oscillations.
Keywords
Gas Turbine, instability, swirler, Numerical simulation
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