Results 81 to 90 of about 1,089,540 (201)
Humidity‐Enhanced Chemoresistive Sensor Performance in a p‐Type Spinel Metal Oxide
Small Structures, Volume 7, Issue 9, September 2026.Humidity reduces the performance of most chemoresistive metal–oxide gas sensing. Here, we demonstrate humidity‐enhanced acetone sensing with ZnMn2O4 by utilizing surface hydroxyl groups. Combining in situ DRIFT spectroscopy and isotope labeling, this work reveals that hydroxyls actively promote analyte oxidation, offering a new strategy to improve ...
Reinaldo S. Theodoro +4 more
wiley +1 more source
Simulation of partially premixed turbulent flames
, 2017 This work numerically investigates the turbulent partially premixed flames, which are ubiquitous in combustion powered devices. This combustion mode involves many physical complexities such as flame propagation in unevenly premixed mixture of fuel and oxidiser, turbulence/flame interaction in presence of mixture fraction gradients, triple flame ...
openaire +1 more source
Quantitative Assessment of Flame Stability Through Image Processing and Spectral Analysis [PDF]
, 2015 This paper experimentally investigates two generalized methods, i.e., a simple universal index and oscillation frequency, for the quantitative assessment of flame stability at fossil-fuel-fired furnaces.
Zhou, Hao +4 more
core +1 more source
Study on the Combustion Behavior of Inhomogeneous Partially Premixed Mixtures in Confined Space
EnergiesReasonably configuring the concentration distribution of the mixture to achieve partially premixed combustion has been proven to be an effective method for improving energy utilization efficiency.
Yanfei Li +3 more
doaj +1 more source
Conditional source-term estimation evaluations for partially-premixed flames
, 2022 Les flammes partiellement prémélangées, caractérisées à la fois par des structures de flamme prémélangées et non prémélangées, ont été identifiées comme étant d’une importance particulière dans la plupart des dispositifs de combustion pratiques. Cependant, comme la plupart des modèles de combustion existants supposent une structure de flamme unique, la
openaire +2 more sources
Simulations of edge-flame propagation in turbulent non-premixed jets
, 2007 Ignition, flame propagation and stabilisation have been simulated and analysed in a turbulent jet of non-premixed methane and air. The first order Conditional Moment Closure (CMC) turbulent combustion model was fully coupled with a Reynolds-Averaged ...
Richardson, E.S., Mastorakos, E.
core +1 more source
Simulation of turbulent non-premixed and partially premixed flames using a look-up table
Journal of Thermal Science and Technology, 2014 In this paper, we present a simple combustion simulation technique based on a look-up table approach. In the proposed technique, a flow solver extracts the solutions of the ordinary differential equations (ODEs) of the chemical equations from the look-up
Kazui FUKUMOTO, Yoshifumi OGAMI
doaj +1 more source
CHEMISTRY-TURBULENCE COUPLING IN A MODEL OF INHOMOGENOUSLY PREMIXED COMBUSTION
TASK Quarterly, 2003 Results of work on an extension of the turbulent flame speed model used for a mathematical description of partially premixed combustion are presented. The approach is based on the concept of internal coupling between the turbulence of the mixed fuel and
JANUSZ BADUR +2 more
doaj
Flow and Flame Mechanisms for Swirl-Stabilized Combustors
AerospaceThis article reviews the physical and chemical mechanisms associated with unsteady swirl-stabilized partially or fully lean premixed combustion.
Paul Palies
doaj +1 more source
Large Eddy Simulation of a Swirl-Stabilized Pilot Combustor from Conventional to Flameless Mode
Journal of Combustion, 2016 This paper investigates flame and flow structure of a swirl-stabilized pilot combustor in conventional, high temperature, and flameless modes by means of a partially stirred reactor combustion model to provide a better insight into designing lean ...
Ehsan Fooladgar, C. K. Chan
doaj +1 more source