Results 31 to 40 of about 1,135 (238)

Experimental investigation of the ignition dynamics in a premixed annular combustor using a pre-chamber ignition system

open access: yesEnergy Conversion and Management: X
In this paper, the ignition characteristics in a MICCA-type annular combustor are studied for the first time using a pre-chamber combustion (PCC) system.
Haroun Hassan   +6 more
doaj   +1 more source

Numerical investigation of forced ignition in laminar counterflow non-premixed methane-air flames

open access: yes, 2007
Simulations of forced ignition of non-premixed laminar counterflow flames are used to study the effect of strain rate on ignition success. A one dimensional calculation is performed, using detailed methane chemical kinetics and treating the spark as an ...
Richardson, E.S., Mastorakos, E.
core   +1 more source

Combustion of turbulent lean mixtures by plasma jet ignition.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1989
In order to confirm quantitatively the performance and characteristics of the plasma jet ignition in turbulent lean mixtures, combustion tests were carried out with varying the governing parameters of the plasma jet ignition. three plasma cavity sizes of 37, 75, and 170 mm3, three orifice diameters of 1, 2, 5 and 4 mm, and three discharge energies of 0.
MURASE, Eiichi   +3 more
openaire   +2 more sources

Mixing Characteristics of Transverse Jet Injection into Supersonic Flow after Rearward-Facing Step

open access: yesAdvances in Mechanical Engineering, 2013
Transverse injection into supersonic flow after rearward-facing step combines a simple way to improve mixing and flameholding in Scramjet engines.
Jinshui Wu   +4 more
doaj   +1 more source

Modelling of combustion and knock onset risk in a high-performance turbulent jet ignition engine

open access: yesTransportation Engineering, 2020
The reduction of CO2 emissions, and hence of fuel consumption, is currently a key driver for the development of innovative SI engines for passenger car applications.
Andrea Bianco   +2 more
doaj   +1 more source

Ultra-Lean Premixed Turbulent Combustion: Challenges of RANS Modelling

open access: yesEnergies, 2022
The main challenge of improving spark ignition (SI) engines to achieve ever increasing thermal efficiencies and near-zero pollutant emissions today concerns developing turbulent combustion under homogeneous ultra-lean premixed mixtures (HULP).
Lorenzo Sforza   +3 more
doaj   +1 more source

Large eddy simulation of ignition and combustion of ethylene/air turbulent jet diffusion flame with reduced kinetic mechanism [PDF]

open access: yes, 2015
In this paper, unsteady process of ignition and combustion of turbulent plane-jet diffusion flame of ethylene/air at varied fuel/air ratios is numerically simulated with Large Eddy Simulation (LES) and a reduced kinetic mechanism of ethylene. The kinetic
马素刚   +3 more
core   +1 more source

Insights on prechamber enabled mixing-controlled combustion (PC-MCC) with methanol in an optical heavy-duty engine

open access: yesApplications in Energy and Combustion Science
Prechamber enabled mixing-controlled combustion (PC-MCC) utilizes an actively fueled prechamber as an ignition assistant to promote diffusion combustion of low cetane fuels.
Jared Zeman   +4 more
doaj   +1 more source

Blast Wave Generated by Delayed Ignition of Under-Expanded Hydrogen Free Jet at Ambient and Cryogenic Temperatures

open access: yesHydrogen, 2022
An under-expanded hydrogen jet from high-pressure equipment or storage tank is a potential incident scenario. Experiments demonstrated that the delayed ignition of a highly turbulent under-expanded hydrogen jet generates a blast wave able to harm people ...
Donatella Cirrone   +5 more
doaj   +1 more source

A Review of Failure Modes and Safety Strategies of Lithium‐Ion Batteries from Materials to Systems

open access: yesAdvanced Science, EarlyView.
A cascade‐aware framework is presented for lithium‐ion battery safety, linking thermal runaway initiation, acceleration, runaway reaction, and propagation with material‐, cell/pack‐, and system‐level interventions. By integrating failure mechanisms, quantitative safety indicators, and staged interception strategies, this review highlights how safer ...
Jin Hyeok Yang   +8 more
wiley   +1 more source

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