Results 11 to 20 of about 575 (165)

Numerical investigation of the premixed V-flame stabilization and blowout [PDF]

open access: yesمهندسی مکانیک شریف, 2021
Global warming and high fossil fuel consumption increase the application of the low-Nox burner with lean-premixed combustion. However, this type of combustion is more susceptible to thermoacoustic instabilities.
N. Nabatian
doaj   +1 more source

DNS for Turbulent Premixed Combustion

open access: yes, 2021
Most of practical combustion occurs in turbulent flows which involve strong coupling between turbulence and chemical processes. The heat release from combustion alters the fluid properties such as density and viscosity and in turns affects the turbulence.
Dipal, Patel,, Martin, Agelin-Chaab,
openaire   +3 more sources

Karlovitz Numbers and Premixed Turbulent Combustion Regimes for Complex-Chemistry Flames

open access: yesEnergies, 2022
The structure of premixed turbulent flames and governing physical mechanisms of the influence of turbulence on premixed burning are often discussed by invoking combustion regime diagrams.
Andrei N. Lipatnikov   +1 more
doaj   +1 more source

Modelling of Conditional Scalar Dissipation Rate in Turbulent Premixed Combustion

open access: yesComputation, 2021
In turbulent premixed flames, for the mixing at a molecular level of reactants and products on the flame surface, it is crucial to sustain the combustion.
Shokri Amzin, Mariusz Domagała
doaj   +1 more source

Scaling of Second-Order Structure Functions in Turbulent Premixed Flames in the Flamelet Combustion Regime

open access: yesFluids, 2020
The second-order velocity structure function statistics have been analysed using a DNS database of statistically planar turbulent premixed flames subjected to unburned gas forcing.
Peter Brearley   +3 more
doaj   +1 more source

Computations of a Bluff-Body Stabilised Premixed Flames Using ERN Method

open access: yesChemEngineering, 2022
Combustible carbon-based energy is still prevailing as the world’s leading energy due to its high energy density. However, the oxidation of these hydrocarbons disturbs the natural carbon cycle greatly by increasing greenhouse gases.
Shokri Amzin
doaj   +1 more source

Burning Rate in Impinging Jet Flames

open access: yesJournal of Combustion, 2011
A method for evaluating burning velocity in premixed turbulent flames stabilized in divergent mean flows is quantitatively validated using numerical approximations of measured axial profiles of the mean combustion progress variable, mean and conditioned ...
A. N. Lipatnikov
doaj   +1 more source

Investigation of Dilution Effect on CH4/Air Premixed Turbulent Flame Using OH and CH2O Planar Laser-Induced Fluorescence

open access: yesEnergies, 2020
Diluting the combustion mixtures is one of the advanced approaches to reduce the NOx emission of methane/air premixed turbulent flame, especially with high diluents to create a distributed reaction zone and mild combustion, which can lower the ...
Li Yang   +5 more
doaj   +1 more source

Non-Premixed Filtered Tabulated Chemistry: Filtered Flame Modeling of Diffusion Flames

open access: yesFuels, 2021
The flame front filtering is a well-known strategy in turbulent premixed combustion. An extension of this approach for the non-premixed combustion context has been proposed by means of directly filtering counterflow diffusion flamelets. Promising results
Pedro Javier Obando Vega   +3 more
doaj   +1 more source

Effects of porous insertion in a round-jet burner on flame characteristics of turbulent non-premixed syngas combustion

open access: yesCase Studies in Thermal Engineering, 2019
Synthesis gas (Syngas) is a gaseous mixture that consists of 3 species. It is used in creating synthetic natural gas. In this work, the turbulent non-premixed flame of syngas-air combustion in a round-jet burner is numerically investigated. The burner is
Santiphong Klayborworn, Watit Pakdee
doaj   +1 more source

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