Results 91 to 100 of about 12,314 (268)

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

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

Effects of Partial Premixing and Coflow Temperature on Flame Stabilization of Lifted Jet Flames of Dimethyl Ether in a Vitiated Coflow Based on Stochastic Multiple Mapping Conditioning Approach

Fluids
The Reynolds-averaged Navier–Stokes (RANS)-based stochastic multiple mapping conditioning (MMC) approach has been used to study partially premixed jet flames of dimethyl ether (DME) introduced into a vitiated coflowing oxidizer stream.
Sanjeev Kumar Ghai, Rajat Gupta, Santanu De   +2 more
doaj   +1 more source

Fuel Consumption and Emissions Reductions of Hybrid Electric Regional‐Haul Trucks Equipped with a High‐Pressure Direct Injection Natural Gas Engine in Real‐World Driving Conditions

Energy Technology, Volume 14, Issue 4, April 2026.
Integrating powertrain electrification with efficient engines using low‐carbon fuels like natural gas (NG) improves energy conversion efficiency and mitigates greenhouse gas (GHG) emissions in heavy‐duty (HD) trucks. High‐pressure direct injection (HPDI) NG engines, using less than 5% diesel (energy basis) as pilot fuel, offer diesel‐like efficiency ...
Sina Moghadasi, Navid Balazadeh‐Meresht, Gordon McTaggart‐Cowan, Mahdi Shahbakhti   +3 more
wiley   +1 more source

The bluff body stabilized premixed flame in an acoustically resonating tube: combustion CFD and measured pressure field [PDF]

, 2009
The resulting limit cycle amplitude and frequency spectrum of a flame placed in a combustor of rectangular cross section is investigated. The partially premixed flame is stabilized on a bluff body placed in the upstream half of the combustor.
Kok, Jim, Matarazzo, Salvatore, Pozarlik, Artur   +2 more
core   +2 more sources

Sustainable Optimization of Emissions and Performance in Hydrogen Port Injection Diesel Engines Through Port Timing and Injection Duration Modulation

Energy Science &Engineering, Volume 14, Issue 4, Page 1725-1748, April 2026.
Optimizing hydrogen port injection in diesel engines significantly improves efficiency and reduces emissions, demonstrating a sustainable dual‐fuel strategy for cleaner transportation solutions and lower environmental impact. ABSTRACT This study evaluates a single‐cylinder hydrogen port injection (HPFI) Diesel engine by systematically varying the ...
Kaustubh R. Kapadani, Nithyananda B S, Shrishail B. Sollapur, Rajesh K, Ashish M. Dharme, Hemant K, Nagaraj Ashok, Abhijit Bhowmik   +7 more
wiley   +1 more source

Filtered density functions from direct numerical simulation of a reactive jet in cross-flow

, 2010
Direct numerical simulation (DNS) with multi-step hydrogen-air chemical kinetics is used to investigate the nearfield of a flame stabilized above a reactive jet in cross-flow (JICF). JICF configurations are typically used where rapid mixing is desirable;
Chen, J.H., Grout, R.W., Gruber, A., Richardson, E.S., Yoo, C.S.   +4 more
core  

Advanced low-NO(x) combustors for supersonic high-altitude gas turbines [PDF]

, 1977
The impact of gas-turbine-engine-powered aircraft on worldwide pollution was defined within two major areas of contribution. First, the contribution of aircraft to the local air pollution of metropolitan areas and, second, the long-term effects on the ...
Roberts, P. B.
core   +1 more source

Statistical analysis of the velocity and scalar fields in reacting turbulent wall-jets

, 2015
The concept of local isotropy in a chemically reacting turbulent wall-jet flow is addressed using direct numerical simulation (DNS) data. Different DNS databases with isothermal and exothermic reactions are examined.
A. V. Johansson, Boersma B. J., Frisch U., L. Biferale, Monin A. S., Pouransari Z., Pouransari Z., Z. Pouransari   +7 more
core   +1 more source

A modeling study on the combustion characteristics of alcohol/diesel dual fuel counterflow flame

Applications in Energy and Combustion Science
This study combines a 0D Well Stirred Reactor (WSR), 1D counterflow flame, experimental data, and a 1D gas dynamic model to create an integrated modeling tool to study the dual fuel combustion behavior in engine-relevant conditions, fueled with E85 and ...
Pourya Rahnama, Ricardo Novella, Bart Somers   +2 more
doaj   +1 more source