Results 21 to 30 of about 3,477,557 (293)

Simulation of the flame describing function of a turbulent premixed flame using an open-source LES solver [PDF]

, 2014
Numerical simulations were used to characterise the non-linear response of a turbulent premixed flame to acoustic velocity fluctuations. The test flame simulated was the bluff body stabilised flame which has been the subject of a detailed experimental ...
Han, X, Morgans, AS
core   +1 more source

A Review on Micro-Combustion Flame Dynamics and Micro-Propulsion Systems

Energies
This work presents a state-of-the-art review of micro-combustion flame dynamics and micro propulsion systems. In the initial section, we focus in on the different challenges of micro-combustion, investigating the typical length and time scales involved ...
David M. Dias, Pedro R. Resende, Alexandre M. Afonso   +2 more
doaj   +1 more source

Effects of thermal expansion, strain rate, and gravity force on the steady propagation of a premixed flame in semi-closed channels

AIP Advances, 2021
The flame dynamics of steady propagation of a premixed flame in semi-closed channels is investigated. The hydrodynamic model takes into account impacts of channel width, thermal expansion, straining effect, and downward gravity force on the flame front ...
Yifan Han, Luhao Liu
doaj   +1 more source

InAsSb Photodiode-Based Infrared Radiation Thermometer for the Investigation of Droplet Surface Temperature Dynamics Within an Enclosed Combustion Chamber

Sensors
This study presents a novel approach to analysing the early stages of the combustion process by measuring the surface temperature of a kerosene droplet from its point of ignition through to its evaporation.
Louis Karapateas, Emilios Leonidas, Xiangfei Meng, Yufeng Lai, Yang Zhang, Jon R. Willmott, Matthew J. Hobbs   +6 more
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

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

Flame interactions in a stratified swirl burner: Flame stabilization, combustion instabilities and beating oscillations [PDF]

, 2019
The present article investigates the interactions between the pilot and main flames in a novel stratified swirl burner using both experimental and numerical methods. Experiments are conducted in a test rig operating at atmospheric conditions.
Laera, Davide, Wang, Jianchen, Han, Xiao, Lin, Yuzhen, Zhang, Chi, Sung, Chih-Jen, Yang, Dong, Hui, Xin, Morgans, Aimee S, Morgans, Aimee S.   +9 more
core   +1 more source

Triple flame structure and diffusion flame stabilization [PDF]

, 1994
The stabilization of diffusion ñames is studied using asymptotic techniques and numerical tools. The configuration studied corresponda to parallel streams of cold oxidizer and fuel initially separated by a splitter píate.
Poinsot, T., Vervisch, L., Liñán Martínez, Amable, Ruetsch, G., Veynante, D., Linan, A.   +5 more
core  

An Autoadaptive Edge-Detection Algorithm for Flame and Fire Image Processing [PDF]

, 2012
The determination of flame or fire edges is the process of identifying a boundary between the area where there is thermochemical reaction and those without. It is a precursor to image-based flame monitoring, early fire detection, fire evaluation, and the
Yan, Yong, Qiu, Tian, Lu, Gang
core   +1 more source