LES evaluation of the effects of equivalence ratio fluctuations on the dynamic flame response in a real gas turbine combustion chamber [PDF]
Large Eddy Simulations (LES) of a lean swirl-stabilized gas turbine burner are used to analyze mechanisms triggering combustion instabilities. To separately study the effect of velocity and equivalence ratio fluctuations, two LES of the same geometry are
Gicquel, Laurent Y.M. +3 more
core +4 more sources
KARAKTERISTIK KECEPATAN NYALA DAN KONSENTRASI ION PADA PEMBAKARAN PREMIXED BUTANA
Research on premixed butane combustion has been carried out, to determine the characteristics of flame velocity and ion concentration. The research was carried out by combining premixed butane mixture in a cylindrical combustion chamber measuring 108 mm ...
Muh Nurkoyim Kustanto
doaj +1 more source
Utilization of transport of species and heat release to a DRG-method-based reduction
We propose a new DRG-based mechanism reduction method that considers heat release rate (HRR), transport of species, and reaction rate. In the original DRG method developed by T. Lu and C. K.
Kazuhiko YAMASAKI +3 more
doaj +1 more source
Large Eddy Simulation of Partially Premixed Flame with Local Extinction Phenomenon
The Sydney partially premixed flame FJ200-5GP-Lr75-103 case with the local extinction phenomenon is studied by large eddy simulation (LES) coupled with the dynamic k equation sub-grid scale model and the dynamic thickened flame (DTF) combustion model. To
ZENG Haixiang, WANG Ping, SHROTRIYA Prashant, JIANG Linsong, MURUGESAN Meenatchidevi
doaj +1 more source
Reaction zones and their structure in MILD combustion [PDF]
Three-dimensional direct numerical simulation (DNS) of turbulent combustion under moderate and intense low-oxygen dilution (MILD) conditions has been carried out inside a cuboid with inflow and outflow boundaries on the upstream and downstreamfaces ...
core +2 more sources
The introduction of the pilot flame can stabilize the lean premixed flame and promote its industrial application. However, the interaction mechanism between the pilot and main flames is complicated.
Lili Zhang +4 more
doaj +1 more source
Nonlinear cellular instabilities of planar premixed flames: numerical simulations of the Reactive Navier-Stokes equations [PDF]
Two-dimensional compressible Reactive Navier-Stokes numerical simulations of intrinsic planar, premixed flame instabilities are performed. The initial growth of a sinusoidally perturbed planar flame is first compared with the predictions of a recent ...
G. J. Sharpe +6 more
core +1 more source
This article reports an analysis of the first detailed chemistry direct numerical simulation (DNS) of a high Karlovitz number laboratory premixed flame. The DNS results are first compared with those from laser-based diagnostics with good agreement.
Haiou Wang +5 more
semanticscholar +1 more source
Investigations on conical lean turbulent premixed hydrogenated natural gas flames
Hydrogen's ability to enhance carbon neutrality in combustion processes puts forward the use of hydrogenated fuels, both in the form of fuel and an energy carrier as a potential decarbonization solution.
Dilay Güleryüz +2 more
doaj +1 more source
Application of laser schlieren technology in the study of gas deflagration in coal mines
In order to be able to “see” the information inside the structure about premixed gas of air and gas deflagration flow field in a underground coal mine, to recognize the coupling relationship between shock wave and flame, obstacles accelerating the ...
HU Yang +7 more
doaj +1 more source

