Results 11 to 20 of about 2,127 (201)

Mixing and flame structure study of inverse swirl diffusion flames

Experimental Thermal and Fluid Science, 2023
Swirling flames appear in many practical applications to enhance flame stabilization. However, relatively few studies have investigated the inverse swirl diffusion flames (ISDFs) in detail. In ISDFs, a central swirling air jet is surrounded by an annular methane fuel jet. In the first part of this work, the stability map of ISDFs is studied.
Elbaz, Ayman M., Ahmed, M. M.A., Albalawi, Alfaisal M., Roberts, William L.   +3 more
openaire   +3 more sources

Experimental study on flame structure, stability, and emission characteristics of CH4-H2 swirl-induced inverse diffusion flame

Case Studies in Thermal Engineering
Inverse Diffusion Flame (IDF) is a flame with a central oxidizer jet surrounded by an annular fuel jet. In this study, a swirler was inserted into the oxidizer nozzle to increase the mixing intensity.
Yuseon Jeon, Man Young Kim, Heejung Jung, Seungro Lee   +3 more
doaj   +2 more sources

Effect of Varied Air Flow on Flame Structure of Laminar Inverse Diffusion Flames [PDF]

, 2004
The structure of laminar inverse diffusion flames (IDFs) of methane and ethylene was studied using a cylindrical co-flowing burner. Several flames of the same fuel flow-rate yet various air flow-rates were examined. Heights of visible flames were obtained using measurements of hydroxyl (OH) laser-induced fluorescence (LIF) and visible images ...
Mikofski, Mark A, Williams, Timothy C, Shaddix, Christopher R, Blevins, Linda G   +3 more
openaire   +2 more sources

Spherical Diffusion Flames of Ethylene in Microgravity: Multidimensional Effects

Fire, 2023
The joint American–Russian Space Experiment Flame Design (Adamant) was implemented on the International Space Station (ISS) in the period from 2019 to 2022.
Sergey M. Frolov, Vladislav S. Ivanov, Fedor S. Frolov, Ilya V. Semenov   +3 more
doaj   +1 more source

Experimental analysis on micro diffusion flames formed by oxygen combustion of H2-CO2 mixture using counterflow burners

Journal of Thermal Science and Technology, 2022
Microscale hydrogen (H2) combustion is one of the promising technologies for renewable miniaturized heat sources. This study analyzes the oxygen combustion of H2 in small-scale counterflow burners, with carbon dioxide (CO2) added for safe hydrogen ...
Daisuke SATO, Shuta NAKACHI, Kaito HONDA, Keisuke OBU, Toshiyuki KATSUMI, Satoshi KADOWAKI   +5 more
doaj   +1 more source

Conceptual Limitations of the Probability Density Function Method for Modeling Turbulent Premixed Combustion and Closed-Form Description of Chemical Reactions’ Effects

Fluids, 2021
In this paper, we critically analyzed possibilities of probability density function (PDF) methods for the closed-form description of combustion chemical effects in turbulent premixed flames.
Vladimir L. Zimont
doaj   +1 more source

Case study for swirling flow and porous media on triple coaxial ports inverse diffusion flame

Alexandria Engineering Journal, 2022
In this study, the effects of swirling flow and porous media of triple coaxial ports inverse diffusion flame (TCP-IDF) on the flame shape, temperature and gas emissions are studied.
Ashraf Kotb, Mahmoud M. Kamal, Amr Baghdady, Hany Saad   +3 more
doaj   +1 more source

Effect of Equivalence Ratio on Flame Morphology, Thermal and Emissions Characteristics of Inverse Diffusion Porous Burner [PDF]

Journal of Applied Fluid Mechanics
The diffusion porous media combustion is one possible way to eliminate the drawbacks of the existing combustion systems. Inverse diffusion flame (IDF) has features of both premixed and non-premixed flames.
A. Dekhatawala, P. V. Bhale, R. Shah
doaj   +1 more source

The research on NO generation mechanism in MILD combustion of primary combustion gas of waste incinerator by NO-LIF method

Nihon Kikai Gakkai ronbunshu, 2022
NO generation mechanism and NOx formation of the inversed diffusion flame (IDF) and MILD combustion formed in the secondary combustion area of waste incinerator were experimentally investigated in order to clarify the NO generation mechanism in the waste
Shuo TIAN, Noriaki NAKATSUKA, Tsukasa HORI, Jun HAYASHI, Fumiteru AKAMATSU   +4 more
doaj   +1 more source

Influence of carbon dioxide and steam on temperature field formed by inverse diffusion flame of gasified-gas of woody biomass

Nihon Kikai Gakkai ronbunshu, 2018
Partial combustion is applied for tar reduction in the gasified-gas of woody biomass. An inverse diffusion flame was formed in partial-combustion-type gas reformer.
Zhiren BAI, Noriaki NAKATSUKA, Jun HAYASHI, Fumiteru AKAMATSU   +3 more
doaj   +1 more source