scholarly journals 5 kHz thermometry in a swirl-stabilized gas turbine model combustor using chirped probe pulse femtosecond CARS. Part 2. Analysis of swirl flame dynamics

2016 ◽  
Vol 173 ◽  
pp. 454-467 ◽  
Author(s):  
Carson D. Slabaugh ◽  
Claresta N. Dennis ◽  
Isaac Boxx ◽  
Wolfgang Meier ◽  
Robert P. Lucht
Keyword(s):  
Gas Turbine ◽  
Probe Pulse ◽  
Flame Dynamics ◽  
Swirl Flame ◽  
Turbine Model

scholarly journals 5 kHz thermometry in a swirl-stabilized gas turbine model combustor using chirped probe pulse femtosecond CARS. Part 1: Temporally resolved swirl-flame thermometry

2016 ◽  
Vol 173 ◽  
pp. 441-453 ◽  
Author(s):  
Claresta N. Dennis ◽  
Carson D. Slabaugh ◽  
Isaac G. Boxx ◽  
Wolfgang Meier ◽  
Robert P. Lucht
Keyword(s):  
Gas Turbine ◽  
Probe Pulse ◽  
Swirl Flame ◽  
Turbine Model

scholarly journals High-speed laser diagnostics for the study of flame dynamics in a lean premixed gas turbine model combustor

2010 ◽  
Vol 52 (3) ◽  
pp. 555-567 ◽  
Author(s):  
Isaac Boxx ◽  
Christoph M. Arndt ◽  
Campbell D. Carter ◽  
Wolfgang Meier
Keyword(s):  
Gas Turbine ◽  
High Speed ◽  
Laser Diagnostics ◽  
Flame Dynamics ◽  
Lean Premixed ◽  
Turbine Model

Numerical Study of Unsteady Flow-Field and Flame Dynamics in a Gas Turbine Model Combustor

2014 ◽  
Author(s):  
Moresh J. Wankhede ◽  
Ferry A. Tap ◽  
Philipp Schapotschnikow ◽  
Wilhelmus J. S. Ramaekers
Keyword(s):  
Flow Field ◽  
Unsteady Flow ◽  
Gas Turbine ◽  
Swirling Flow ◽  
Numerical Study ◽  
Swirl Flow ◽  
Detached Eddy Simulation ◽  
Flame Dynamics ◽  
Flamelet Generated Manifold ◽  
Turbine Model

In swirl-stabilized gas turbine combustors, interaction between unsteady flow-field and flame dynamics play a key role in driving several types of combustion instabilities, establishing flame location and its structure and influencing heat release rates. This is challenging to understand and computationally expensive to resolve in detail. In this study, a highly turbulent and swirling flow-flame dynamics in a gas turbine model combustor is characterized numerically using unsteady Reynolds-averaged Navier Stokes (URANS) and detached eddy simulation (DES) based computational fluid dynamics (CFD) methods. From flame representation point of view, the Flamelet Generated Manifold (FGM) method is used to reduce combustion chemistry (which still includes detailed reaction kinetics and species diffusion in reaction layers) and hence computational requirements. The helical precessing vortex core (PVC) instability and its influence on downstream flow/flame dynamics is captured. Further insight is gained into URANS and DES methods capabilities in simulating various coherent swirl flow structures such as central toroidal recirculation zone (CTRZ) and outer recirculation zones (ORZ) as well as fuel-air mixing patterns. NOx emission, which is currently a high-priority design objective due to stringent pollutant regulations, is also computed. The results show that the numerically captured swirling flow-flame dynamics is in accordance with the experimental observations and measurements.

Experimental study of stratified swirl flame dynamics in a model gas turbine combustor

Energy ◽  
2020 ◽  
Vol 211 ◽  
pp. 118699
Author(s):  
Zhihao Zhang ◽  
Xiao Liu ◽  
Yaozhen Gong ◽  
Yang Yang ◽  
Zijia Tang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Gas Turbine ◽  
Gas Turbine Combustor ◽  
Flame Dynamics ◽  
Model Gas Turbine Combustor ◽  
Swirl Flame

scholarly journals Chirped probe pulse femtosecond coherent anti-Stokes Raman scattering thermometry at 5 kHz in a Gas Turbine Model Combustor

2015 ◽  
Vol 35 (3) ◽  
pp. 3731-3738 ◽  
Author(s):  
Claresta N. Dennis ◽  
Carson D. Slabaugh ◽  
Isaac G. Boxx ◽  
Wolfgang Meier ◽  
Robert P. Lucht
Keyword(s):  
Raman Scattering ◽  
Gas Turbine ◽  
Probe Pulse ◽  
Anti Stokes ◽  
Turbine Model

The Civic: A Concept in Vortex Induced Combustion for the Solar Gemini 10 kW Gas Turbine

1981 ◽  
Vol 103 (1) ◽  
pp. 34-42 ◽  
Author(s):  
J. R. Shekleton
Keyword(s):  
Gas Turbine ◽  
Diffusion Flames ◽  
Reynolds Numbers ◽  
Flame Stabilization ◽  
Fuel Injector ◽  
Combustion Chambers ◽  
Turbine Generator ◽  
Fuel Injectors ◽  
Swirl Flame ◽  
Combustion Processes

The Radial Engine Division of Solar Turbines International, an Operating Group of International Harvester, under contract to the U.S. Army Mobility Equipment Research & Development Command, developed and qualified a 10 kW gas turbine generator set. The very small size of the gas turbine created problems and, in the combustor, novel solutions were necessary. Differing types of fuel injectors, combustion chambers, and flame stabilizing methods were investigated. The arrangement chosen had a rotating cup fuel injector, in a can combustor, with conventional swirl flame stabilization but was devoid of the usual jet stirred recirculation. The use of centrifugal force to control combustion conferred substantial benefit (Rayleigh Instability Criteria). Three types of combustion processes were identified: stratified and unstratified charge (diffusion flames) and pre-mix. Emphasis is placed on five nondimensional groups (Richardson, Bagnold, Damko¨hler, Mach, and Reynolds numbers) for the better control of these combustion processes.

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