Combustion Dynamic Analysis of Gas Turbine Engine

Combustion Dynamic Analysis of Gas Turbine Engine

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2017 by IJETT Journal
Volume-50 Number-6
Year of Publication : 2017
Authors : M.V.H.Satish Kumar
DOI :  10.14445/22315381/IJETT-V50P254

Citation 

M.V.H.Satish Kumar "Combustion Dynamic Analysis of Gas Turbine Engine", International Journal of Engineering Trends and Technology (IJETT), V50(6),321-328 August 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
The need for better fuel efficiency and less exhaust emissions has prompted rapid advancement in today’s gas turbine engines. These innovations require more accurate condition monitoring systems to achieve optimal gas turbine performance. Burning a leaner flame reduces NOx emissions but may increase instability (combustion dynamics) at the same time. Combustion Instability can damage components in the combustion chamber such as nozzles, baskets, transition pieces and downstream components such as blades, resulting in downtime and loss of revenue. The aim of this Project is to analyse the behaviour of a backward-facing step non-premixed combustor using Computational tools & compare the results with experimental data already available. Different parameters affecting the various stages & aspects of combustion process such as unsteady heat release, incomplete combustion, noise generation, interaction between flame, flow field & acoustics are intensively studied. In this Project, combustion process of methane & air in a Backward Facing Step Combustor was examined using ANSYS Fluent Package for the acoustic excitation. 3-component velocity measured downstream of the inlet was used to determine the spatial average of turbulent intensity. The instantaneous and average velocity fields for both cold and combusting flows have been obtained using CFD package FLUENT.

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Keywords
The instantaneous and average velocity fields for both cold and combusting flows have been obtained using CFD package FLUENT.