Stratified Flames in Dual Annular Counter-Rotating Swirl Burner for Wider Operability Gas TurbinesSource: Journal of Energy Resources Technology:;2022:;volume( 145 ):;issue: 001::page 12305-1Author:Nemitallah, Medhat A.
,
Elzayed, Mohamed S.
,
Alshadidi, Abdulrahim
,
Abualkhair, Mohanad
,
Abdelhafez, Ahmed
,
Alzahrani, F. M.
,
Abdul Jameel, Abdul Gani
DOI: 10.1115/1.4055095Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study investigates numerically the effects of equivalence ratio (Φ) on flow/flame interactions and emissions of stratified oxy-methane (CH4/O2/CO2) flames in a dual annular counter-rotating swirl (DACRS) burner for wider operability and environmental-friendly gas turbines. The flow mixture entering the combustor is split into two coaxial streams of different equivalence ratios. The central stream is characterized by higher Φ to continuously ignite the flame for enhanced flame stability, whereas the annular stream is a highly lean mixture to sustain the environmental performance of the combustor. The partially premixed combustion model is adopted in the ansys-fluent 2021-r1 software to model the reaction kinetics of the generated stratified flames in the two-dimensional axisymmetric domain. Nine cases of the same inlet velocity ratio (primary stream to secondary stream) of 3.0 are examined at a fixed oxygen fraction (OF: volumetric percentage of oxygen in the O2/CO2 mixture) of both streams of 30%. Flame stratification is achieved by varying the equivalence ratios of the primary (Φp = 0.9, 0.8, and 0.7) and secondary (Φs = 0.7, 0.55, and 0.4) streams. The results indicate effective flame/flow interactions, complete combustion, and reduced emissions for the DACRS stratified flames.
|
Collections
Show full item record
contributor author | Nemitallah, Medhat A. | |
contributor author | Elzayed, Mohamed S. | |
contributor author | Alshadidi, Abdulrahim | |
contributor author | Abualkhair, Mohanad | |
contributor author | Abdelhafez, Ahmed | |
contributor author | Alzahrani, F. M. | |
contributor author | Abdul Jameel, Abdul Gani | |
date accessioned | 2023-11-29T19:03:09Z | |
date available | 2023-11-29T19:03:09Z | |
date copyright | 10/21/2022 12:00:00 AM | |
date issued | 10/21/2022 12:00:00 AM | |
date issued | 2022-10-21 | |
identifier issn | 0195-0738 | |
identifier other | jert_145_1_012305.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4294544 | |
description abstract | This study investigates numerically the effects of equivalence ratio (Φ) on flow/flame interactions and emissions of stratified oxy-methane (CH4/O2/CO2) flames in a dual annular counter-rotating swirl (DACRS) burner for wider operability and environmental-friendly gas turbines. The flow mixture entering the combustor is split into two coaxial streams of different equivalence ratios. The central stream is characterized by higher Φ to continuously ignite the flame for enhanced flame stability, whereas the annular stream is a highly lean mixture to sustain the environmental performance of the combustor. The partially premixed combustion model is adopted in the ansys-fluent 2021-r1 software to model the reaction kinetics of the generated stratified flames in the two-dimensional axisymmetric domain. Nine cases of the same inlet velocity ratio (primary stream to secondary stream) of 3.0 are examined at a fixed oxygen fraction (OF: volumetric percentage of oxygen in the O2/CO2 mixture) of both streams of 30%. Flame stratification is achieved by varying the equivalence ratios of the primary (Φp = 0.9, 0.8, and 0.7) and secondary (Φs = 0.7, 0.55, and 0.4) streams. The results indicate effective flame/flow interactions, complete combustion, and reduced emissions for the DACRS stratified flames. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Stratified Flames in Dual Annular Counter-Rotating Swirl Burner for Wider Operability Gas Turbines | |
type | Journal Paper | |
journal volume | 145 | |
journal issue | 1 | |
journal title | Journal of Energy Resources Technology | |
identifier doi | 10.1115/1.4055095 | |
journal fristpage | 12305-1 | |
journal lastpage | 12305-15 | |
page | 15 | |
tree | Journal of Energy Resources Technology:;2022:;volume( 145 ):;issue: 001 | |
contenttype | Fulltext |