Results 61 to 70 of about 55,811 (318)
Statistical analysis of electrostatic spark ignition of lean H₂/O₂/Ar mixtures [PDF]
, 2011 The concept of minimum ignition energy (MIE) has traditionally formed the basis for studying ignition hazards of fuels. However, the viewpoint of ignition as a statistical phenomenon appears to be more consistent with the inherent variability in ...
Bane, S. P. M. +3 more
core
On the mechanism of "tulip flame" formation: the effect of ignition sources [PDF]
Physics of Fluids, 35 (2023) pp. 116122 (1-13), 2023 The early stages of hydrogen-air flame dynamics and the physical mechanism of tulip flame formation were studied using high-resolution numerical simulations to solve the two-dimensional fully compressible Navier-Stokes equations coupled with a one-step chemical model, which was calibrated to obtain the correct the laminar flame velocity-pressure ...
arxiv
A Natural Lignification Inspired Super‐Hard Wood‐Based Composites with Extreme Resilience
Advanced Materials, EarlyView.Super‐hard wood‐based composites (WBC) are designed and developed inspired by the mesoscale homogeneous lignification process intrinsic to tree growth. This innovative hybrid structure is achieved by leveraging the infusion of low‐molecular‐weight phenol formaldehyde resin into the cell walls of thin wood slices, followed by a unique multi‐layer ...
Yuxiang Huang +11 more
wiley +1 more source
Anatomical Sciences Education, Volume 16, Issue 1, Page 128-147, January/February 2023., 2023 Abstract Uncertainty tolerance, individuals' perceptions/responses to uncertain stimuli, is increasingly recognized as critical to effective healthcare practice. While the Covid‐19 pandemic generated collective uncertainty, healthcare‐related uncertainty is omnipresent.
Michelle D. Lazarus +3 more
wiley +1 more source
Sensors, 2020 For the type approval of compression ignition (diesel) and gasoline direct injection vehicles, a particle number (PN) limit of 6 × 1011 p/km is applicable.
Barouch Giechaskiel +4 more
doaj +1 more source
Data-driven Analysis of Relight variability of Jet Fuels induced by Turbulence [PDF]
arXiv, 2020 For safety purposes, reliable reignition of aircraft engines in the event of flame blow-out is a critical requirement. Typically, an external ignition source in the form of a spark is used to achieve a stable flame in the combustor. However, such forced turbulent ignition may not always successfully relight the combustor, mainly because the state of ...
arxiv
Synthesis and Photothermal Processing of Silicon‐Based Nanoconfined MXenes
Advanced Materials Interfaces, EarlyView.Intercalation of titanium carbide (Ti3C2Tx) MXenes with aminopropyl terminated polydimethylsiloxane (amino‐PDMS) is demonstrated through ion‐exchange method followed by photonic curing (PC) using xenon flashlamp. The intercalation and PC result in enhanced interlayer spacing of Ti3C2Tx of 13.5 and 11 nm, respectively. Furthermore, conversion of PDMS to
Najma Khatoon +7 more
wiley +1 more source
An effect of abrupt current disruption [PDF]
arXiv, 2011 Every engine, let it internal combustion engine in car or turbine of airplane, needs a high quality fuel igniter. During last decades there have been some minor changes made in ignition systems, like invention of Capacitive Discharge Ignition, Multiple Discharge Ignition, Ignition with Direct Current Discharge, but all based on the same priciple of ...
arxiv
Forced ignition and oscillating flame propagation in fine ethanol sprays [PDF]
arXiv, 2022 The present work investigates forced ignition and oscillating propagation of spray flame in a mixture of fine ethanol droplets and air. Eulerian-Eulerian method with two-way coupling is used and detailed chemical mechanism is considered. Different droplet diameters and liquid fuel equivalence ratios (ER) are studied.
arxiv
Permanent Plasma Surface Functionalization of Internal Surface Areas
Advanced Materials Interfaces, EarlyView.With applications in various fields including biomedical sciences, textiles, or filter industry, stable functionalization of porous membranes is indispensable. Plasma‐activated species with specific reactivities infiltrate porous substrates at different penetration depths due to their distinct energies and diffusivities.
Dirk Hegemann +4 more
wiley +1 more source