Results 21 to 30 of about 16,763 (260)

Comparing Early Evolution of Flames in X-Ray Bursts in Two and Three Dimensions

The Astrophysical Journal, 2023
We explore the early evolution of flame ignition and spreading on the surface of a neutron star in three dimensions, in the context of X-ray bursts.
Michael Zingale, Kiran Eiden, Max Katz
doaj   +1 more source

Experimental and Numerical Study of the Trench Fire Spread Rule over a Sloped Uniform Fuel Bed: Rate of Fire Spread, Flame Morphology, and Heat Flux

Fire, 2023
Trench fires on sloped terrain are always complicated due to the corresponding flame dynamics and heat transfer mechanisms. Flame attachment may increase the rate of fire spread (ROS) by enlarging the heating area of unburned vegetation.
Yi Wang, Rui Huang
doaj   +1 more source

Numerical Simulations of Forced Ignition and Flame Dynamics in an Ammonia/Air Mixing Layer

Energies
This work explores NH3/air non-premixed combustion in a mixing layer, with the objective of quantifying the influence of key parameters on ignition and flame dynamics. A series of two-dimensional simulations were conducted with forced ignition.
Zhuchuan Chang, Haiou Wang, Kun Luo, Jianren Fan   +3 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Influence of the Configurations of Fuel Injection on the Flame Transfer Function of Bluff Body-Stabilized, Non-Premixed Flames

Energies
Combustion instability poses a significant challenge in aerospace propulsion systems, particularly in afterburners that employ bluff-body flame stabilizers.
Haitao Sun, Yan Zhao, Xiang Zhang, Suofang Wang, Yong Liu   +4 more
doaj   +1 more source

Role of buoyancy-driven vortices in inducing different modes of coupled behaviour in candle-flame oscillators

AIP Advances, 2019
We investigate the coupled behaviour of two oscillatory flames produced by separate bundles of candles, referred to as candle-flame oscillators, as the distance between them is varied.
Suraj Dange, Samadhan A. Pawar, Krishna Manoj, R. I. Sujith   +3 more
doaj   +1 more source

Combustion Dynamics of Swirling Flame at Thermochemical Conversion of Biomass

Chemical Engineering Transactions, 2015
Development of the swirling flame dynamics at thermo chemical conversion of biomass (wood pellets) has been investigated experimentally at a low swirl number of the swirling flame flow (S < 0.6), different rates of biomass thermal decomposition and ...
I. Barmina, A. Kolmickovs, R. Valdmanis, M. Zake   +3 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Electric Field-Induced Variations of Combustion Dynamics

Chemical Engineering Transactions, 2014
An experimental study of the electric field effect on combustion dynamics at thermo-chemical conversion of biomass pellets was carried out with the aim to determine the DC field effect on the processes of biomass gasification, combustion of volatiles ...
I. Barmina, M. Zake, R. Valdmanis
doaj   +1 more source

Design of Dome Structure for A Lean Premixed Swirled Combustor of Gas Turbine Based on the Numerical Method

发电技术, 2023
To analyse the dome structure of the lean premixed swirled combustor, the influences of lance tip shapes, inflow air flow rates, numbers and locations of fuel nozzles and head expansion ratios on the combustion flame, flow field and flame dynamic ...
YANG Yang, LI Yaoqiang, ZHANG Jinqi
doaj   +1 more source