Results 61 to 70 of about 159,157 (147)

The effect of swirl intensity on flame propagation behavior in lean premixed burner

Nihon Kikai Gakkai ronbunshu, 2015
In gas turbine engines, combustion temperature increases in order to reduce CO2 emissions and to improve thermal efficiency. However, at the same time, this leads to the increase of nitrogen oxide (NOx) emissions.
Yuichi ICHIKAWA, Masaharu KOMIYAMA, Atsushi KOYAMA   +2 more
doaj   +1 more source

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, Matteo D’Andria, Tiago Elias Abi‐Ramia Silva, Diogo P. Volanti, Andreas T. Güntner   +4 more
wiley   +1 more source

Propagation Properties of Turbulent Premixed Flames Neutral for Thermo-Diffusive Effects

International Journal of Automotive Engineering, 2020
Burning velocity is one of the important properties of premixed turbulent flames. Premixed turbulent flames are, in general, subjected to the thermo-diffusive effects in addition to the increase in the flame front area due to the influence of turbulence.
Toshiaki Kitagawa, Hiroaki Watanabe, Ryou Nishiyama, Riou Sonokawa, Kenichi Shinoda   +4 more
doaj   +1 more source

Flame spreading mechanisms over the methane hydrate surface

Journal of Thermal Science and Technology
This study investigates the flame spreading mechanisms on the surface of methane hydrate using numerical simulations with the Fire Dynamics Simulator and Smokeview (FDS-SMV).
Otabek NIGMATOV, Toshihisa UEDA, Oksana ISMAILOVA   +2 more
doaj   +1 more source

Study on Combustion Oscillation of Premixed Flame with Pilot Fuel at Elevated Pressures

Journal of Thermal Science and Technology, 2009
Acoustically-coupled combustion oscillation is studied for premixed flame with pilot fuel to be used in gas turbine combustors. Premixed gas is passed through swirl vanes and burnt with the centrally injected pilot fuel.
Masaya OHTSUKA, Shohei YOSHIDA, Yoshitaka HIRATA, Nariyoshi KOBAYASHI   +3 more
doaj   +1 more source

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

Advanced Materials, Volume 38, Issue 43, 3 August 2026.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria, Meng Yin, Stefan Neuhauser, Vlasis G. Mavrantzas, Ying Chen, Ken Suzuki, Andreas T. Güntner   +6 more
wiley   +1 more source

Effect of different flue gas recirculation rates on low‐NOx combustion characteristics: A numerical simulation based on the combustion process of a gas boiler

The Canadian Journal of Chemical Engineering, Volume 104, Issue 8, Page 3970-3983, August 2026.
Abstract NOx emissions from gas boilers severely impact the environment, and flue gas recirculation (FGR) technology can effectively reduce such emissions, yet the effects of different FGR rates on combustion performance and NOx formation remain unclear. This study thus used numerical simulation (via ANSYS Fluent, adopting the realizable k‐ε turbulence
Chao Min, Shuhao Xu, Yitao Yang, Peng Wang   +3 more
wiley   +1 more source

Effects of Mean Inflow Velocity and Droplet Diameter on the Propagation of Turbulent V-Shaped Flames in Droplet-Laden Mixtures

Fluids, 2020
Three-dimensional carrier phase Direct Numerical Simulations of V-shaped n-heptane spray flames have been performed for different initially mono-sized droplet diameters to investigate the influence of mean flow velocity on the burning rate and flame ...
Gulcan Ozel Erol, Nilanjan Chakraborty
doaj   +1 more source

The influence of fuel structure on CO and NOx formation in lean premixed hydrocarbon flames [PDF]

, 1978
A study is made of the influence chemical structure of fuel has upon combustion performance through tracing the generation of carbon monoxide and oxides of nitrogen in lean, premixed, hydrocarbon-air flames.
Saleh, H. S. M.
core   +3 more sources

Effect of Pressure, Environment Temperature, Jet Velocity and Nitrogen Dilution on the Liftoff Characteristics of a N2-in-H2 Jet Flame in a Vitiated Co-flow

Eurasian Chemico-Technological Journal, 2014
The CO2 emission prevention advantage of generating power with high hydrogen content fuels using gas turbines motivates an improved understanding of the ignition behavior of hydrogen in premixed and partially premixed environments.
A. North, M. Magar, J. Y. Chen, R. Dibble, A. Gruber   +4 more
doaj   +1 more source