Results 11 to 20 of about 1,030,475 (236)

Turbulent Premixed Flame Kernel Growth During The Early Stages Using Direct Numerical Simulation [PDF]

open access: yes, 2008
In this thesis Direct Numerical Simulation (DNS) is used to investigate the development of turbulent premixed flame kernels during the early stages of growth typical of the period following spark ignition.
Dunstan, T. D.
core   +7 more sources

Joint stereo-PIV and NO-LIF in turbulent premixed hydrogen-air flames [PDF]

open access: yes, 2009
A new technique to simultaneously and instantaneously resolve 3D velocity/2D strain rate fields and scalar/scalar gradient fields was developed and evaluated in this study.
Magand, Christelle C. G.
core   +7 more sources

Flame Behaviour in an Acoustically Forced Gas Turbine Combustor [PDF]

open access: yes, 2009
A swirl stabilised dump combustor capable of imposing flow perturbations creating combustion instabilities has been designed and commissioned. The capability of supplying different fuel mixtures (methane hydrogen blends) has been incorporated ...
Ruggles, Adam
core   +7 more sources

Hydrogen-Bond Enabled Phosphite Based Intrinsic Flame-Retardant Solid-Solid Phase Change Materials Using Catalyst/Solvent-Free Multi-Component Reaction for Battery Thermal Management. [PDF]

open access: yesAdv Sci (Weinh)
The phosphite group endows intrinsic flame retardancy, while the P = O bond enhances intermolecular interactions to realize solid‐solid phase transition. Battery thermal management tests show the materials extend the safe working time of lithium‐ion batteries by 200%. Cone calorimeter tests indicate a 14s delay in ignition time, and reductions of 37.6%,
Liu C   +9 more
europepmc   +2 more sources

Multi-Scale Bionic Structure Constructs Biomass Flame-Retardant Thermal Insulation Foam Material. [PDF]

open access: yesAdv Sci (Weinh)
Inspired by mussel adhesion and hierarchical brick‐and‐mortar architectures, a cellulose‐based biomimetic foam is constructed by anchoring bentonite nanosheets onto a polydopamine‐decorated cellulose nanofiber network. The resulting foam combines low thermal conductivity with intrinsic flame retardancy and full biodegradability, presenting a ...
Liao J   +10 more
europepmc   +2 more sources

Bound Water as a Reinforcing Element for Ultra-Strong Polyacrylamide. [PDF]

open access: yesAdv Sci (Weinh)
Rather than acting as a conventional plasticizer, bound water serves as a reinforcing element in polyacrylamide by constructing strong PAM–water–PAM hydrogen‐bond networks. This water‐mediated architecture delivers ultra‐high mechanical strength and exceptional flame resistance, redefining the role of water in polymer reinforcement.
Pruksawan S   +10 more
europepmc   +2 more sources

Fire-Safe Hierarchical Solid Polymer Electrolytes Enabled by Dual-Functional Microcapsules for Lithium Metal Batteries. [PDF]

open access: yesAdv Sci (Weinh)
Dual‐functional fire‐safe microcapsules are integrated into hierarchical solid polymer electrolytes to provide sequential protection against thermal abuse. The ammonium hydrogen phytate‐modified shell forms a protective char barrier, while the thermally triggered release of perfluoro(2‐methyl‐3‐pentanone) actively suppresses combustion, enabling safer ...
Huang Z   +5 more
europepmc   +2 more sources

Auto-Ignition and Flame Stabilization of Hydrogen / Natural Gas / Nitrogen Jets in a Vitiated Cross-Flow at Elevated Pressure [PDF]

open access: yes, 2013
The influence of natural gas (NG) on the auto-ignition behavior of hydrogen (H2)/nitrogen (N2) fuel jets injected into a vitiated cross-flow was studied at conditions relevant for practical combustion systems (p = 15 bar, Tcross-flow = 1173 K).
Aigner, Manfred   +5 more
core   +1 more source

Experimental Study on Cryogenic Compressed Hydrogen Jet Flames

open access: yesFire
Cryogenic compressed hydrogen (CcH2) technology combines the advantages of high pressure and low temperature to achieve high hydrogen storage density without liquefying the hydrogen, which has broad application prospects.
Shishuai Nie   +5 more
doaj   +1 more source

Effect of gas composition and initial turbulence on the propagation dynamics of premixed flames of hydrogen-blended natural gas fuel

open access: yesCase Studies in Thermal Engineering
In order to reduce carbon emissions, the effects of gas composition and initial turbulence on the premixed flame dynamics of hydrogen-blended natural gas were investigated.
Peng Cai   +5 more
doaj   +1 more source

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