Log in

Relevant bibliographies by topics / Co/counter-swirl flames

Contents

Journal articles
Conference papers

Academic literature on the topic 'Co/counter-swirl flames'

Author: Grafiati

Published: 6 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Co/counter-swirl flames.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Co/counter-swirl flames"

1

Gupta, A. K., M. J. Lewis, and M. Daurer. "Swirl Effects on Combustion Characteristics of Premixed Flames." Journal of Engineering for Gas Turbines and Power 123, no. 3 (2000): 619–26. http://dx.doi.org/10.1115/1.1339987.

Full text

Abstract:

The effect of radial distribution of swirl has been examined on the thermal behavior of two different premixed flames using a double concentric premixed swirl burner. The double concentric swirl burner allowed systematic variation in the radial distribution of swirl (both co- and counter-) between the inner and outer annulus of the burner. The burner had two annular jets and a central nozzle. Information on the thermal field in two flames formed by co- or counter-swirl in the outer annulus and co-swirl in the inner annulus has been examined. Specifically mean and fluctuating temperatures, inte

APA, Harvard, Vancouver, ISO, and other styles

2

Kotb, Ashraf, and Hany Saad. "A comparison of the thermal and emission characteristics of co and counter swirl inverse diffusion flames." International Journal of Thermal Sciences 109 (November 2016): 362–73. http://dx.doi.org/10.1016/j.ijthermalsci.2016.06.015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Sung, Yonmo, and Gyungmin Choi. "Non-intrusive optical diagnostics of co- and counter-swirling flames in a dual swirl pulverized coal combustion burner." Fuel 174 (June 2016): 76–88. http://dx.doi.org/10.1016/j.fuel.2016.01.011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Smith, Travis E., Christopher M. Douglas, Benjamin L. Emerson, and Timothy C. Lieuwen. "Axial evolution of forced helical flame and flow disturbances." Journal of Fluid Mechanics 844 (April 5, 2018): 323–56. http://dx.doi.org/10.1017/jfm.2018.151.

Full text

Abstract:

This paper presents 5 kHz stereo particle image velocimetry and OH planar laser induced fluorescence measurements of transversely forced swirl flames. The presence of transverse forcing on this naturally unstable flow both influences the natural instabilities, as well as amplifies disturbances that may not necessarily manifest themselves during natural oscillations. By manipulating the structure of the acoustic forcing field, both axisymmetric and helical modes are preferentially excited away from the frequency of natural instability. The paper presents a method for spatially interpolating the

APA, Harvard, Vancouver, ISO, and other styles

5

Hadef, R., and B. Lenze. "Effects of co- and counter-swirl on the droplet characteristics in a spray flame." Chemical Engineering and Processing: Process Intensification 47, no. 12 (2008): 2209–17. http://dx.doi.org/10.1016/j.cep.2007.11.017.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Singh, Parampreet, Ratna Kishore Velamati, and Subhash Chander. "Computational Fluid Dynamics Analysis of Aerodynamics and Impingement Heat Transfer From Hexagonal Arrays of Multiple Dual-Swirling Impinging Flame Jets." Journal of Heat Transfer 142, no. 8 (2020). http://dx.doi.org/10.1115/1.4047055.

Full text

Abstract:

Abstract Radiative furnaces pose significant thermal inertia and single impinging flames have been observed to cause occurrence of hotspots on the target surface. Multiple burners arranged in suitable array configuration represent one of the plausible solutions for more uniform heat transfer. In this study, computational fluid dynamics (CFD) simulations have been carried out for multiple swirling impinging flames arranged in a hexagonal array configuration. The turbulence chemistry interactions in the flame field are solved numerically using renormalization group (RNG) based k–ε/eddy dissipati

APA, Harvard, Vancouver, ISO, and other styles

7

Singh, Parampreet, Ratna Kishore Velamati, and Subhash Chander. "A Numerical Investigation on Fluid Dynamics and Heating Characteristics of Co-and-Counterrotating Multiple Swirling Impinging Flames Arranged in 3 × 3 Inline Array." Journal of Thermal Science and Engineering Applications 12, no. 3 (2020). http://dx.doi.org/10.1115/1.4046023.

Full text

Abstract:

Abstract Swirling impinging flame jets possess the potential of uniformly heating the target surface. Numerical simulations have been carried out for multiple reacting swirling flows arranged in square 3 × 3 array. The turbulence chemistry interactions in the flow field are modeled using RNG based k-ε/ eddy dissipation model (EDM) framework. Co-and-counterrotating configurations have been compared for interactions and spent gas release mechanism at fixed inter-jet spacing and separation distance. Multiple swirling impinging flames undergo strong interactions resulting in distortions of recircu

APA, Harvard, Vancouver, ISO, and other styles

8

Ma, Jinglong, Xin Hui, Meng Han, et al. "Influence of the co- and counter-swirl on combustion instability of the centrally staged combustor." Physics of Fluids 35, no. 8 (2023). http://dx.doi.org/10.1063/5.0157777.

Full text

Abstract:

The centrally staged combustor is an effective way to reduce NOx emissions from combustors. However, combustion instability caused by the mutual coupling between flames and acoustics during the combustion process is almost unavoidable. To better understand this problem, the effect of the swirl rotational direction is investigated in this paper using two different schemes with co-swirl and counter-swirl configurations. Pressure fluctuations and flame dynamics are investigated under self-excited combustion oscillation conditions. The CH* chemiluminescence distribution captured by a high-speed ca

APA, Harvard, Vancouver, ISO, and other styles

9

Ahn, Byeonguk, and Kyutae Kim. "Effect of Counter- and Co-swirl On Low-frequency Combustion Instabilities of Jet A-1 Spray Flames." Journal of Engineering for Gas Turbines and Power, August 25, 2022. http://dx.doi.org/10.1115/1.4055354.

Full text

Abstract:

Abstract The present article experimentally investigates the influence of pilot swirling directions on low-frequency combustion instabilities of pilot diffusion flames in a laboratory-scale combustor with Jet A-1 fuel and air at atmospheric pressure. Airblast atomization nozzles with either counter-rotating (CTR) or co-rotating (COR) pilot swirl flows were examined using nonlinear time-series analyses and high-speed flame imaging measurements under idle and sub-idle operating conditions. We show that while the amplitude and frequency of limit cycle oscillations are observed to be similar for b

APA, Harvard, Vancouver, ISO, and other styles

10

Degeneve, A., R. Vicquelin, C. Mirat, J. Caudal, and T. Schuller. "Impact of co- and counter-swirl on flow recirculation and liftoff of non-premixed oxy-flames above coaxial injectors." Proceedings of the Combustion Institute, September 2020. http://dx.doi.org/10.1016/j.proci.2020.06.279.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Co/counter-swirl flames"

1

Liu, Weijie, Bing Ge, Yinshen Tian, et al. "Experimental Study on Instability Characteristics of Low-Swirl Flames in a Multi-Nozzle Combustor With Different Swirling Arrays." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56714.

Full text

Abstract:

This paper presents experimental study on self-excited combustion instability characteristics of premixed low-swirl flames in a multi-nozzle can combustor with counter-swirl and co-swirl arrays. Experiments were carried out over a wide range of inlet velocity from 4 m/s to 15.5 m/s and equivalence ratio from 0.5 to 0.85. Phase-locked OH planar laser-induced fluorescence was employed to measure flame shape and identify heat release rate. Four operation regions: stable combustion region, unstable combustion region, flashback region and extinguish region are observed for both array burners. The s

APA, Harvard, Vancouver, ISO, and other styles

2

Ahn, Byeonguk, and Kyu Tae Kim. "Effect of Counter- and Co-Swirl on Low-Frequency Combustion Instabilities of Jet A-1 Spray Flames." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-79706.

Full text

Abstract:

Abstract The present article experimentally investigates the influence of pilot swirling directions on low-frequency combustion instabilities of pilot diffusion flames in a laboratory-scale combustor with Jet A-1 fuel and air at atmospheric pressure. Airblast atomization nozzles with either counter-rotating (CTR) or co-rotating (COR) pilot swirl flows were examined using nonlinear time-series analyses and high-speed flame imaging measurements under idle and sub-idle operating conditions. We show that while the amplitude and frequency of limit cycle oscillations are observed to be similar for b

APA, Harvard, Vancouver, ISO, and other styles

3

Linck, Martin B., Michael D. Armani, and Ashwani K. Gupta. "Effect of Swirl and Fuel Pulsation on Flow Dynamics, Flame Structure and Droplet Motion in Swirl-Stabilized Spray Flames." In ASME 2004 Power Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/power2004-52048.

Full text

Abstract:

This paper describes an experimental investigation of the role of swirl distribution in a co-annular swirl-stabilized spray combustor for passive control of flame structure using kerosene fuel. Three distinctly different flames have been examined. A low shear, a high shear, and a counter-rotating swirling flow flame have been examined. The droplet dynamics and flowfield associated with the low and high shear co-rotating swirl configurations under isothermal and combustion conditions have been examined using a phase Doppler interferometric techniques. The high-shear swirl configuration was foun

APA, Harvard, Vancouver, ISO, and other styles

4

Archer, S. S., A. K. Gupta, and K. Kitagawa. "Flow Dynamics of Unconfined Swirling Flames Under Fuel-Lean Conditions." In ASME 2006 Power Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/power2006-88114.

Full text

Abstract:

This study provides the role of co- and counter swirl distribution in a experimental double concentric swirl burner that simulates the that simulates one swirl cup of a practical gas turbine combustor. Results of the effect of radial distribution of swirl in a burner under unconfined non-burning and combustion conditions are presented on the flow dynamics of a fuel-lean direct injection (LDI) configuration using propane as the fuel. Three-dimensional (3-D) flowfield data has been obtained immediately downstream of the burner exit to determine the detailed flow dynamics associated with the flow

APA, Harvard, Vancouver, ISO, and other styles

5

Archer, Sean, and Ashwani K. Gupta. "Swirl Distribution Effects on the Thermal Characteristics of Premixed Flames." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/cie-21676.

Full text

Abstract:

Abstract An experimental investigation has been carried out on four premixed flames using a double concentric swirl burner. The influence of radial distribution of swirl on the global flame behavior, thermal and emission characteristics have been determined. Temperature data was compensated with time constant data to generate mean and fluctuating temperature maps, probability density distributions of temperature, power spectra and thermal integral- and micro-time scales in the flames. Direct flame photographs were taken to archive flame shape and light intensity. These data provided valuable i

APA, Harvard, Vancouver, ISO, and other styles

6

Archer, S., and A. K. Gupta. "Confinement Effects on Flow Dynamics in Swirling Flames." In ASME 2005 Power Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pwr2005-50167.

Full text

Abstract:

Three-dimensional (3-D) flowfield data has been obtained using Particle Image Velocimetry (PIV) for varying swirl distributions in the burner. The 3-D data also allows one determine the local swirl number of the resulting flow. Flow characteristics of the resulting flowfield, both without and with combustion, have been examined for the effect of co- and counter-swirl under lean direct injection conditions using unconfined and confined combustor geometry. Experimental results of the effect of swirl and combustion are presented to simulate the flow dynamics of Lean Direct Injection (LDI) configu

APA, Harvard, Vancouver, ISO, and other styles

7

Gautam, Vivek, and A. K. Gupta. "Spectroscopic Analysis of Fuel Lean Flames for Propulsion Applications." In ASME 2004 Power Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/power2004-52074.

Full text

Abstract:

Chemiluminescence and thermal imaging techniques have been used to examine the chemical and thermal behavior of turbulent flames with practical application to TBCC propulsion systems. The present study examines single swirler using an experimental double concentric swirl burner that simulates one swirler in a practical gas turbine combustor. The optical emission spectroscopy (OES) technique have been used to provide information on selected species in flames that mark the flame reaction zone and heat release rate. The instantaneous images are then integrated to obtain time-averaged information.

APA, Harvard, Vancouver, ISO, and other styles

8

Ahmad, N. T., and G. E. Andrews. "Enclosed Swirl Flames: Interaction Between Swirlers in Lean Primary Zones." In ASME 1986 International Gas Turbine Conference and Exhibit. American Society of Mechanical Engineers, 1986. http://dx.doi.org/10.1115/86-gt-278.

Full text

Abstract:

Three axial vane swirlers were investigated in a simulated sector of an annular combustor. The influence of co and counter rotating swirl on combustion emissions and flame stability are studied with kerosene as the fuel and inlet temperatures up to 800K. Comparison is made with one of the swirlers in a single swirler can combustor. The results show that the influence of the relative swirl direction does not influence the flame stability but does influence the combustion efficiency and NOx emissions. However, both systems are superior to a single swirler can combustor.

APA, Harvard, Vancouver, ISO, and other styles

9

Archer, S., and A. K. Gupta. "Flow Dynamics of Unconfined and Confined Swirl Stabilized Gaseous Flames." In ASME 2004 Power Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/power2004-52079.

Full text

Abstract:

Three-dimensional (3-D) flowfield data has been obtained using Particle Image Velocimetry (PIV) for varying swirl distributions in the burner. The 3-D data also allows one determine the local swirl number of the resulting flow. Flow characteristics of the resulting flowfield, both without and with combustion, have been examined for the effect of co- and counter-swirl under lean direct injection conditions using unconfined and confined combustor geometry. Experimental results of the effect of swirl and combustion are presented to simulate the flow dynamics of Lean Direct Injection (LDI) configu

APA, Harvard, Vancouver, ISO, and other styles

10

Archer, S., and A. K. Gupta. "Flow Dynamics Under Confined and Unconfined Combustion Conditions." In ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57732.

Full text

Abstract:

Three-dimensional (3-D) flowfield data has been obtained using Particle Image Velocimetry (PIV). Information on selected intermediate flame generated species that mark the flame front and heat release rate has been obtained using optical emission spectroscopy (OES). Instantaneous images on the spatial distribution of OH, CH, and C2 species from within the flames have been obtained using an ICCD camera and narrow band interference filters. The instantaneous images are then integrated to obtain time-averaged information. The PIV and OES diagnostics are employed for varying swirl distributions in

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!