CFD Prediction of Partload CO Emissions Using a Two-Timescale Combustion ModelSource: Journal of Engineering for Gas Turbines and Power:;2011:;volume( 133 ):;issue: 007::page 71502Author:Bernhard Wegner
,
Y. Egorov
,
Kai Aschmoneit
,
H. Forkel
,
Uwe Gruschka
,
Werner Krebs
,
J. Ferreira
DOI: 10.1115/1.4002021Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Today’s and future electric power generation is characterized by a large diversification using all kind of sources, including renewables resulting in noncoherent fluctuations of power supply and power usage. In this context, gas turbines offer a high operational flexibility and a good turn down ratio. In order to guide the design and down select promising solutions for improving partload emissions, a new combustion model based on the assumption of two separate timescales for the fast premixed flame stabilization and the slow post flame burnout zone is developed within the commercial computational fluid dynamics (CFD) code ANSYS CFX. This model enables the prediction of CO emissions generally limiting the turn down ratio of gas turbines equipped with modern low NOx combustion systems. The model is explained and validated at lab scale conditions. Finally, the application of the model for a full scale analysis of a gas turbine combustion system is demonstrated.
keyword(s): Combustion , Combustion chambers , Computational fluid dynamics , Gas turbines , Flames , Emissions , Design , Combustion systems , oxidation AND Temperature ,
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contributor author | Bernhard Wegner | |
contributor author | Y. Egorov | |
contributor author | Kai Aschmoneit | |
contributor author | H. Forkel | |
contributor author | Uwe Gruschka | |
contributor author | Werner Krebs | |
contributor author | J. Ferreira | |
date accessioned | 2017-05-09T00:43:35Z | |
date available | 2017-05-09T00:43:35Z | |
date copyright | July, 2011 | |
date issued | 2011 | |
identifier issn | 1528-8919 | |
identifier other | JETPEZ-27168#071502_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/145983 | |
description abstract | Today’s and future electric power generation is characterized by a large diversification using all kind of sources, including renewables resulting in noncoherent fluctuations of power supply and power usage. In this context, gas turbines offer a high operational flexibility and a good turn down ratio. In order to guide the design and down select promising solutions for improving partload emissions, a new combustion model based on the assumption of two separate timescales for the fast premixed flame stabilization and the slow post flame burnout zone is developed within the commercial computational fluid dynamics (CFD) code ANSYS CFX. This model enables the prediction of CO emissions generally limiting the turn down ratio of gas turbines equipped with modern low NOx combustion systems. The model is explained and validated at lab scale conditions. Finally, the application of the model for a full scale analysis of a gas turbine combustion system is demonstrated. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | CFD Prediction of Partload CO Emissions Using a Two-Timescale Combustion Model | |
type | Journal Paper | |
journal volume | 133 | |
journal issue | 7 | |
journal title | Journal of Engineering for Gas Turbines and Power | |
identifier doi | 10.1115/1.4002021 | |
journal fristpage | 71502 | |
identifier eissn | 0742-4795 | |
keywords | Combustion | |
keywords | Combustion chambers | |
keywords | Computational fluid dynamics | |
keywords | Gas turbines | |
keywords | Flames | |
keywords | Emissions | |
keywords | Design | |
keywords | Combustion systems | |
keywords | oxidation AND Temperature | |
tree | Journal of Engineering for Gas Turbines and Power:;2011:;volume( 133 ):;issue: 007 | |
contenttype | Fulltext |