Results 81 to 90 of about 1,469,729 (346)

Large Eddy Simulation of the Effect of Hydrogen Ratio on the Flame Stabilization and Blow-Off Dynamics of a Lean CH4/H2/Air Bluff-Body Flame

open access: yesApplied Sciences
This study investigated the flame structure and dynamics of a bluff-body flame when numerically close to blow-off conditions. This includes the impact of the hydrogen ratio on lean CH4/H2/air flame stabilization and blow-off characteristics.
Lei Cheng   +4 more
doaj   +1 more source

Effects of stoichiometry on premixed flames propagating in narrow channels: symmetry-breaking bifurcations

open access: yes, 2017
Recent studies within the diffusive-thermal (constant-density) approximation have shown that, for premixed flames freely propagating in narrow adiabatic channels, the instabilities induced by differential diffusion may result in non-symmetric solutions ...
Fernandez-Galisteo, Daniel   +3 more
core   +1 more source

Electrochemically Engineered PEDOT:PSS/MXene Composite Electrode for the Label‐Free Procalcitonin Detection

open access: yesAdvanced Materials Interfaces, EarlyView.
Procalcitonin is a key biomarker for bacterial infections, but conventional detection methods are often time‐consuming. Here, we present an electrochemical sensor based on highly conductive Ti3C2Tx MXene combined with PEDOT:PSS, enabling direct antibody immobilization, while a bovine serum albumin coating provides antifouling protection.
Angelika Banaś   +6 more
wiley   +1 more source

Flame Instability and Transition to Detonation in Supersonic Reactive Flows

open access: yes, 2017
Multidimensional numerical simulations of a homogeneous, chemically reactive gas were used to study ignition, flame stability, and deflagration-to-detonation transition (DDT) in a supersonic combustor.
Center   +4 more
core   +1 more source

The Thermonuclear Explosion Of Chandrasekhar Mass White Dwarfs [PDF]

open access: yes, 1996
The flame born in the deep interior of a white dwarf that becomes a Type Ia supernova is subject to several instabilities. We briefly review these instabilities and the corresponding flame acceleration. We discuss the conditions necessary for each of the
Blinnikov S. I.   +17 more
core   +3 more sources

Instantaneous flame-stabilization velocities in lifted-jet diffusion flames

open access: yesCombustion and Flame, 1997
Liftoff height and velocity measurements are presented for turbulent, lifted methane and ethylene flames. A range of Reynolds numbers from 3800 to 22,000 is investigated, and the effect of coflow velocity is examined. The mean liftoff height is shown to increase with jet-exit and coflow velocity, while the rms fluctuation about the mean increases with ...
L. Muñiz, M.G. Mungal
openaire   +1 more source

LFA: A Lattice Fourier Analyzer for Quantitative In Situ EC‐STM of Adsorbate–Substrate Superstructures

open access: yesAdvanced Materials Interfaces, EarlyView.
Although electrochemical scanning tunneling microscopy provides atomic‐scale access to electrified interfaces, quantitative in situ and operando investigations suffer from drift‐induced distortions. This work introduces the Lattice Fourier Analyzer (LFA), which employs substrate‐anchored affine drift correction in reciprocal space to recover precise ...
Rafał Lewandków   +4 more
wiley   +1 more source

Recent progress in additive inorganic flame retardants polymer composites: Degradation mechanisms, modeling and applications

open access: yesHeliyon
Additive flame retardant offers several advantages in terms of formulation, improved performance and reduced environmental impact. These additives result in superior thermal management and the delay of thermal runaway events which ensures safety as well ...
Rishubh Gupta   +5 more
doaj   +1 more source

Water‐Stable Paper‐Based Laser‐Induced Graphene With Asymmetric Water Adhesion and Wettability

open access: yesAdvanced Materials Interfaces, EarlyView.
Paper‐based electronics are attractive for sustainable and disposable devices, but often fail in wet environments. By introducing Parafilm into cellulose paper combined with laser conversion, two graphene surfaces with different water interactions are created.
Lingyin Meng   +3 more
wiley   +1 more source

Experimental investigation of piloted flameholders [PDF]

open access: yes
Four configurations of piloted flameholders were tested. The range of flame stabilization, flame propagation, pressure oscillation during ignition, and pressure drop of the configurations were determined.
Guo, C. F., Xie, Q. M., Zhang, Y. H.
core   +1 more source

Home - About - Disclaimer - Privacy