Results 31 to 40 of about 11,184 (128)

Hybrid Oxygen Enrichment and Preheating Strategy for Performance Recovery in Ultra‐Lean Micro–Trapped Vortex Combustors

Energy Science &Engineering, EarlyView.
Ultra‐lean H2 micro‐combustor performance is boosted through regulated O2 enrichment and inlet preheating. A 16‐case Taguchi study (ϕ = 0.3) shows: controlled enrichment and heating increase radiative output and efficiency, but excessive O2/temperature causes flashback.
Anouar Benzitouni, Abdelhakim Settar, Boudinar Naouam, Salaheddine Azzouz, Zakaria Mansouri   +4 more
wiley   +1 more source

Flame Enhancement and Quenching in Fluid Flows [PDF]

, 2002
We perform direct numerical simulations (DNS) of an advected scalar field which diffuses and reacts according to a nonlinear reaction law. The objective is to study how the bulk burning rate of the reaction is affected by an imposed flow.
Abel M, Abel M, Alexander Kiselev, Audoly B, Avellaneda M, Berestycki H, Bradley D, Chandrasekhar S, Drazin P G, Fife P C, Kanel Ya, Kolmogorov A N, Leonid Ryzhik, Natalia Vladimirova, Oleg Ruchayskiy, Pelcé P, Peter Constantin, Ronney P D, Taylor G I, Vladimirova N, Volpert A, Williams F A, Zeldovich Ya B   +22 more
core   +2 more sources

A Shock‐Tube Study of the HCl + M →$\to $ H + Cl + M (M = Ar) Rate Constant Using HCl Laser Absorption Near 3.3 µm

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT Hydrogen chlorine (HCl) is an important combustion intermediate during plastic (municipal waste) and composite propellant (aerospace) combustion, but the understanding of its high‐temperature chemistry is still evolving. In this study, the pyrolysis of 0.5% HCl in Ar was investigated behind reflected shock waves in a shock tube at temperatures
Claire M. Grégoire, Olivier Mathieu, Eric L. Petersen   +2 more
wiley   +1 more source

Evaluation of a High‐Performance Monopropellant Formed of Microencapsulated Hydrocarbon Fuels in Combination With Gelled Hydrogen Peroxide in a Strand Burner Setup

Propellants, Explosives, Pyrotechnics, EarlyView.
A high‐performance premixed monopropellant is prepared from hydrocarbon‐filled microcapsules and hydrogen peroxide. This propellant is burned in a strand burner, and the effect of different parameters on the burn rate is evaluated. ABSTRACT A dispersion of hydrocarbon‐fuel‐filled microcapsules in gelled hydrogen peroxide can form a premixed ...
Robin Scholl, Felicitas S. Moll, Dominic Freudenmann, Stefan Schlechtriem   +3 more
wiley   +1 more source

An efficient flamelet progress-variable method for modeling non-premixed flames in weak electric fields

, 2017
Combustion stabilization and enhancement of the flammability limits are mandatory objectives to improve nowadays combustion chambers. At this purpose, the use of an electric field in the flame region provides a solution which is, at the same time, easy ...
De Palma, P., de Tullio, M. D., Di Renzo, M., Pascazio, G.   +3 more
core   +1 more source

Experimental and theoretical investigation of the flashback of a swirling, bluff-body stabilised, premixed flame [PDF]

, 2015
Flashback of an open turbulent, premixed flame in a swirl burner with central bluff-body is considered. The aim is to obtain further understanding of the physical mechanisms responsible for the upstream flame propagation.
Christodoulou, Loizos, Dreizler, Andreas, Heeger, Christoph, Karimi, Nader   +3 more
core   +1 more source

Simulation of Nonpremixed Jet Flame Using Flamelet‐Generated Manifold

Safety Science and Technology, EarlyView.
A flamelet‐generated manifold (FGM) approach is proposed and validated by nonpremixed methane jet flames. The effects of radiation and buoyancy were critically examined, and nonpremixed and premixed tabulation methods were compared, revealing the importance of radiation, buoyancy, and appropriate flamelet prototype in accurate FGM modeling.
Yujie Lin, Weijie Zhang, Zhi Zhang, Ziqi Wang, Peng Cai, Yi Liu, Anfeng Yu   +6 more
wiley   +1 more source

Imaging gas in a combustion engine with high‐energy X‐ray Compton scattering

Journal of Synchrotron Radiation, EarlyView.
Compton‐scattering imaging has been applied to a combustion engine under operation for the first time. With a time‐resolved technique, a crank‐angle dependency of Compton‐scattered X‐ray intensity is obtained at different positions in a combustion chamber.We have developed a time‐resolved Compton‐scattering imaging technique for visualizing gas ...
Yuki Mizuno, Hiroaki Suzuki, Naruki Tsuji, Takuyo Oguchi, Go Matsubara, Hiroyuki Yamase, Yoshiharu Sakurai   +6 more
wiley   +1 more source

Ignition and flame sptead in laminar mixing layers [PDF]

, 1994
In order to identify some of the mathematical problems encoun-tered in analyzing the ignition and ñame spread in mixing layéis, \ve shall describe the structure of the laminar mixing layer between two parallel streams of a fu el and air, initially ...
Liñán Martínez, Amable
core   +1 more source

Improving Plasma‐Catalytic Ammonia Synthesis Using a Coaxial Double‐Helix‐Electrode Reactor

ChemSusChem, Volume 19, Issue 7, 14 April 2026.
A symmetric double‐dielectric, double‐helix dielectric barrier discharge (DBD) reactor enables uniform volume discharge, enhanced energetic electrons, and strong plasma‐catalyst synergy, delivering high‐efficiency ammonia synthesis under mild, low‐carbon conditions.
Shijie Xian, Xiaolan Fu, Shaowei Chen, Liping Cao, Tianqi Liu, Yibing Mu, Xiaolei Fan, Jiangqi Niu   +7 more
wiley   +1 more source