Results 91 to 100 of about 15,463 (219)

Mechanical and Physical Performance of Mortars Incorporating Crushed Hazelnut Shells as Partial Fine Aggregate Replacement

open access: yesAdvances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
This study investigates the mechanical and physical properties of mortars incorporating crushed hazelnut shell (HS) as a partial replacement for fine aggregates. Mortar mixtures were prepared with varying water‐to‐cement (w/c) ratios ranging from 0.35 to 0.50 and HS dosages of 2.5%, 5%, and 7.5% by weight, along with reference mixtures without HS.
Sergio J. Yanez   +7 more
wiley   +1 more source

Modelling extinction and reignition in turbulent flames [PDF]

open access: yes, 2008
The presented work attempts to extend the conditional moment closure method for noon-premixed. turbulent combustion to predict extinction and reignition phenomena in turbulent flames.
Kostka, Markus, Kostka, Markus
core  

Study on Chemical Kinetic Mechanism of Methanol/Ammonia/n‐Heptane for Engine Combustion

open access: yesInternational Journal of Energy Research, Volume 2026, Issue 1, 2026.
Methanol and ammonia are considered promising low‐carbon fuel blends for engine applications; however, achieving stable ignition under compression–ignition conditions remains challenging. As a result, a small quantity of n‐heptane can be introduced as a highly reactive pilot fuel to initiate the combustion process. In this study a detailed mechanism is
Hua Xiao   +7 more
wiley   +1 more source

DNS Investigation on Autoignition and Flame Propagation in HCCI Combustion

open access: yesJournal of Fluid Science and Technology, 2011
2-dimensional direct numerical simulation (DNS) of autoignition and flame propagation of turbulent premixed mixture has been conducted to investigate the turbulent combustion mechanism in homogeneous charge compression ignition (HCCI) engines.
Hiroaki FUKUMOTO   +5 more
doaj   +1 more source

The Influence of Hydrocarbon Additives on Laminar Burning Velocity and NOx Emissions in Hydrogen‐Air Combustion

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 25, Issue 4, December 2025.
ABSTRACT Hydrogen is a promising carbon‐free fuel but faces challenges due to combustion instability and nitrogen oxide (NOx${\rm NO}_x$) emissions during combustion. This study investigates the potential of blending hydrocarbons (methane, propane) or ammonia with hydrogen‐air flames in order to minimize these challenges.
Abdelkader Hemaizia   +4 more
wiley   +1 more source

Numerical investigation on the combustion characteristics of turbulent premixed ammonia/air flames stabilized by a swirl burner

open access: yesJournal of Fluid Science and Technology, 2016
The present study is dedicated to understand the combustion characteristics of turbulent premixed swirl flames for ammonia (NH3)/air mixture in gas turbine combustors by a numerical investigation.
Kapuruge Don Kunkuma Amila SOMARATHNE   +2 more
doaj   +1 more source

Thermal Release Characteristics of Aeroengine Combustor Outlet Modulated by Gliding Arc Plasma

open access: yesAdvanced Science, Volume 12, Issue 41, November 6, 2025.
Gliding arc plasma‐assisted combustion significantly improves aeroengine combustor. Gliding arc plasma moves flames closer to the fuel source, enabling complete burning. This increases the combustion efficiency by 10.3% and raises outlet temperature by 141.6°C.
Lei Zhang   +5 more
wiley   +1 more source

On the limits of industrial premixed combustion simulation [PDF]

open access: yes, 1999
This work analyses the simulation potential of two premixed turbulent combustion models based on different combustion mechanism concepts: the Eddy Dissipation Concept based on the volume combustion mechanism, and the Turbulent Flame-speed Closure based ...
Barbato, Maurizio, Zimont, Vladimir L.
core  

Non‐Flammable Electrolytes for Safe Lithium‐, Sodium‐, and Potassium‐Ion Batteries

open access: yesElectron, Volume 3, Issue 4, November 2025.
This review highlighted recent progress in non‐flammable electrolytes for lithium‐, sodium‐, and potassium‐ion batteries (PIBs). It explores diverse flame‐retardant systems, including organophosphorus, halogenated, ionic liquid, aqueous, and solid‐state types, emphasizing their safety mechanisms, electrochemical performance, and compatibility.
Guifang Zeng   +7 more
wiley   +1 more source

Flow process in combustors [PDF]

open access: yes
Fluid mechanical effects on combustion processes in steady flow combustors, especially gas turbine combustors were investigated. Flow features of most interest were vorticity, especially swirl, and turbulence. Theoretical analyses, numerical calculations,
Gouldin, F. C.
core   +1 more source

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