Results 11 to 20 of about 29,169 (246)

Non-linearities in the thermoacoustic response of a premixed swirl burner [PDF]

open access: yes, 2009
PhDLean premixed combustion remains one of the simplest and most effective methods of reducing NOx emissions in industrial gas turbines. Lean premixed flames are however prone to an undesirable side effect known as combustion instability, reducing ...
Hosseini, S. M. Reza, Hosseini, S M Reza
core   +4 more sources

Rayleigh scattering temperature measurements in a swirl stabilized burner [PDF]

open access: yes, 2013
Rayleigh scattering temperature measurements were obtained in a turbulent reactive swirling coaxial jet discharged from a swirl-stabilized burner along the jet-flame centerline.
Hardalupas, Y.   +3 more
core   +3 more sources

Investigation of the influence of swirl on a confined coannular swirl jet [PDF]

open access: yes, 2010
Large Eddy Simulations are used to model a turbulent confined coannular combustor and examine the effects of swirl on the flow field and mixing. Three separate simulations with relatively high mesh resolutions and different swirl numbers have been ...
Jenkins, K.W.   +5 more
core   +1 more source

Effects of swirl on intermittency characteristics in turbulent non-premixed flames [PDF]

open access: yes, 2012
Swirl effects on velocity, mixture fraction and temperature intermittency have been analysed for turbulent methane flames using LES. The LES solves the filtered governing equations on a structured Cartesian grid using a finite volume method, with ...
Jenkins, K.W.   +10 more
core   +1 more source

3D Numerical Simulation and Performance Analysis of CO2 Vortex Tubes

open access: yesApplied Sciences, 2021
In view of the extensive application of swirl flow pipes (vortex tubes) in refrigeration systems, the parameters of swirl flow pipes were investigated to provide optimal cooling and heating conditions. Three-dimensional numerical simulations were carried
Qijun Xu, Jinfeng Wang, Jing Xie
doaj   +1 more source

Influence of bluff-body and swirl on mixing and intermittency of jets [PDF]

open access: yes, 2010
In this paper we present the modelled results of turbulence, scalar mixing and intermittency for three different basic fluid dynamical problems using large eddy simulation (LES). The modelled problems are a turbulent round jet, a bluff body stabilised
Kirkpatrick, M. P.   +3 more
core   +2 more sources

Spectrophotometric and Topographic Correlations within the Mare Ingenii Swirl Region: Evidence for a Highly Mobile Lunar Regolith

open access: yesThe Planetary Science Journal, 2023
The spectrophotometric properties of two study areas in the Ingenii swirl region show that the combined effects of multiple processes are required to explain the regolith’s mineralogical and physical properties.
Deborah Domingue   +7 more
doaj   +1 more source

Study of jet precession, recirculation and vortex breakdown in turbulent swirling jets using LES. [PDF]

open access: yes, 2009
Large eddy simulations (LES) are used to investigate turbulent isothermal swirling flows with a strong emphasis on vortex breakdown, recirculation and instability behaviour.
Ranga Dinesh, K.K.J.   +3 more
core   +1 more source

Experiment and numerical study of the combustion behavior of hydrogen-blended natural gas in swirl burners

open access: yesCase Studies in Thermal Engineering, 2022
Hydrogen production from renewable energy is gaining increasing attention to enhance energy consumption structure and foster a more eco-friendly and sustainable society.
Wei Du   +4 more
doaj   +1 more source

Effect of Hot Streak on Aerothermal Performance of High Pressure Turbine Guide Vane under Different Swirl Intensities

open access: yesAerospace, 2022
In advanced civil aero-engine, the gas exiting combustor typically features hot streak (HS) and swirl that affect the aerothermal performances of the high pressure (HP) nozzle guide vane (NGV).
Shenghui Zhang   +3 more
doaj   +1 more source

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