Results 11 to 20 of about 267,692 (291)

Numerical investigation to evaluate the effects of gravity and pressure on flame structure and soot formation of turbulent non-premixed methane-air flame

Propulsion and Power Research, 2022
In this study, a turbulent non-premixed (diffusion) methane-air flame has been investigated computationally to analyze the influences of pressure and gravity on flame structure and sooting characteristics between 1 and 10 atm.
Subrat Garnayak, Amjad Ali Pasha, Radi Alsulami, Medhat A. Nemitallah, Abdul Gani Abdul Jameel, Sukanta K. Dash, V. Mahendra Reddy   +6 more
doaj   +1 more source

Counterflow flame extinction of ammonia and its blends with hydrogen and C1-C3 hydrocarbons

Applications in Energy and Combustion Science, 2022
Ammonia as a fuel offers the potential to avoid carbon emissions, but its combustion is hindered by low reactivity. Here, the extinction limits of NH3 and NH3 plus reactivity enhancers were measured in the counterflow laminar non-premixed flames.
Adamu Alfazazi, Et-touhami Es-sebbar, Xiaoyuan Zhang, Bassam Dally, Marwan Abdullah, Mourad Younes, S. Mani Sarathy   +6 more
doaj   +1 more source

Measurement and modelling of the laminar burning velocity of methane-ammonia-air flames at high pressures using a reduced reaction mechanism

Combustion and Flame, 2019
Ammonia and blends of ammonia with methane are gaining increased interest as fuels for gas turbine applications and hence optimized reduced reaction mechanisms for the fuels are required for the development of combustors.
E. Okafor, Yuji Naito, Sophie Colson, Akinori Ichikawa, Taku Kudo, A. Hayakawa, Hideaki Kobayashi   +6 more
semanticscholar   +1 more source

A comparison of the blow-out behavior of turbulent premixed ammonia/hydrogen/nitrogen-air and methane–air flames

, 2020
Ammonia has been identified as a promising energy carrier that produces zero carbon dioxide emissions when used as a fuel in gas turbines. Although the combustion properties of pure ammonia are poorly suited for firing of gas turbine combustors, blends ...
S. Wiseman, M. Rieth, A. Gruber, J. Dawson, Jacqueline H. Chen   +4 more
semanticscholar   +1 more source

Study on the breakdown characteristics of conductor-plane gap under vegetation fire condition based on the combustion features

The Journal of Engineering, 2019
The frequent forest fires become a serious threat to the performance of transmission lines’ external insulation, therefore, researches on the breakdown characteristics under flame conditions is of great significance for the transmission lines ...
Daochun Huang, Wei Lu, Tao Yao, Peng Li
doaj   +1 more source

Comparative Study on Combustion and Flame Characteristics of Laminar Methane/Air and N-Butane/Air Flames in a Micro-Slot Burner

International Journal of Chemical Engineering, 2022
Combustion and flame characteristics of laminar methane/air and n-butane/air flames in a 3D-printed micro-slot burner is compared and reported in this study. The stability limit, flame appearance, and emission performance are investigated experimentally.
Soroush Sheykhbaglou, Seyed Mostafa Robati   +1 more
doaj   +1 more source

Turbulent flame image classification using Convolutional Neural Networks

Energy and AI, 2022
Pockets of unburned material in turbulent premixed flames burning CH4, air, and CO2 were studied using OH Planar Laser-Induced Fluorescence (PLIF) images to improve current understanding.
Rathziel Roncancio, Aly El Gamal, Jay P. Gore   +2 more
doaj   +1 more source

Off‐axis self‐reference digital holography in the visible and far‐infrared region

ETRI Journal, 2019
Recent advances in digital holography in the far‐infrared region of the spectrum have demonstrated the potential use of digital holography in homeland security as a tool to observe hostile environments in which smoke, flames, and dust impair vision ...
Vittorio Bianco, Melania Paturzo, Andrea Finizio, Pietro Ferraro   +3 more
doaj   +1 more source

Numerical Investigation of the Chemical Effect and Inhibition Effect Improvement of C3H2F3Br (2-BTP) Using the Perfectly Stirred Reactor Model

Energies, 2018
The overall chemical rate and chemical effect of CF3Br, 2-BTP and 2-BTP/CO2 with hydrocarbon flames are calculated using the perfectly stirred reactor (PSR) model. The chemical effects of CF3Br with CH4/air flames always inhibit combustion.
Ping Li, Bo Ke, Jian Zhang, Xianfeng Chen   +3 more
doaj   +1 more source

Characteristic patterns of thermodiffusively unstable premixed lean hydrogen flames

Proceedings of the Combustion Institute, 2019
Large-scale two-dimensional numerical simulations of thermodiffusively unstable, lean, premixed hydrogen flames have been performed using detailed finite rate chemistry to analyze flame intrinsic scales.
L. Berger, K. Kleinheinz, A. Attili, H. Pitsch   +3 more
semanticscholar   +1 more source