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Emissions predictions in turbulent reacting industrial gas turbine combustor flows using RANS and LES methods

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Emissions predictions in turbulent reacting industrial gas turbine combustor flows using RANS and LES methods

Jella, Sandeep Ebenezer (2008) Emissions predictions in turbulent reacting industrial gas turbine combustor flows using RANS and LES methods. Masters thesis, Concordia University.

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Abstract

CFD predictions of emissions using conventional RANS methods have been shown to be inaccurate, sometimes by orders of magnitude. In recent years, deeper details of the chemistry-aerodynamics coupling in lean-premixed combustion regimes have been demanded from CFD predictions. Large Eddy Simulation (LES) of non-reacting flows provides high-fidelity predictions of flow field aerodynamics in gas turbine combustor chambers, critical for accurate emissions predictions. While LES has been validated for many simple lab combustors, there are few simulations that have used this method for practical industrial combustors at their baseload conditions. This thesis describes its application to an industrial gas turbine combustor at elevated pressures and temperatures. A well-validated commercial code, Fluent 6.3, has been used to obtain reacting and non-reacting flows that occur in this combustor geometry. The final emissions predictions were compared with rig test results.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Thesis (Masters)
Authors:Jella, Sandeep Ebenezer
Pagination:v, 233 leaves : ill. (some col.) ; 29 cm.
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Mechanical and Industrial Engineering
Date:2008
Thesis Supervisor(s):Paraschivoiu, Marius
ID Code:976010
Deposited By: Concordia University Library
Deposited On:22 Jan 2013 16:18
Last Modified:18 Jan 2018 17:41
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