Results 31 to 40 of about 906,379 (184)

Experimental and Numerical Study of Oxygen Diluted Partially Premixed Dimethyl Ether/ Methane Counter Flow Flame

Chemical Engineering Transactions, 2017
The oxygen diluted partially premixed dimethyl ether/methane counter flow flames were discussed in this paper. Flame images and flame structures were obtained through experiments and numerical simulation.
J. Luo, W. Li, L. Tian, L. Liu
doaj   +1 more source

Tailoring High‐Valent Iron‐Oxo Species Redox via Extended π‐Fe3d–O2p Orbital Overlapping Toward Chemical‐Efficient Water Purification

Angewandte Chemie, EarlyView.
We address the long‐standing challenge of reactivity–selectivity trade‐off by precisely tuning the redox properties of Fe(IV), rather than simply accelerating its formation, to enable chemically efficient and low‐emission water treatment. ABSTRACT High‐valent iron oxo species (Fe(IV)) are attractive for wastewater treatment because of their high ...
Hongyu Zhou, Junwen Chen, Jiuyi Wang, Xinhao Wang, Qiming Zhang, Shiying Ren, Xuning Li, Li Gao, Shaobin Wang, Xiaoguang Duan   +9 more
wiley   +2 more sources

Large Eddy Simulations of a Low-Swirl Gaseous Partially Premixed Lifted Flame in Presence of Wall Heat Losses

Energies, 2022
The use of lifted flames presents some very promising advantages in terms of pollutant emissions and flame stability. The focus here is on a specific low-swirl injection system operated with methane and derived from an air-blast atomizer for aero-engine ...
Leonardo Langone, Matteo Amerighi, Antonio Andreini   +2 more
doaj   +1 more source

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

Non-linearities in the thermoacoustic response of a premixed swirl burner [PDF]

, 2009
PhDLean premixed combustion remains one of the simplest and most effective methods of reducing NOx emissions in industrial gas turbines. Lean premixed flames are however prone to an undesirable side effect known as combustion instability, reducing ...
Hosseini, S. M. Reza
core   +4 more sources

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

Experimental Assessment on the Coupling Effect of Mixing Length and Methane-Ammonia Blends on Flame Stability and Emissions

Energies, 2023
Lean premixed combustion mode has become attractive for utilization in industrial gas turbines due to its ability to meet strict emissions regulations without compromising engine efficiency.
Marwan Abdullah, Thibault F. Guiberti, Radi A. Alsulami   +2 more
doaj   +1 more source

Numerical simulation of the influence of partial premixing on the propagation of partially premixed flames

Computers & Mathematics with Applications, 2013
This paper is concerned with the analysis of the influence of a partial premixing between fuel and oxidizer at one of the boundaries of a porous walls channel. The mathematical formulation of this problem is performed by means of a constant-density thermodiffusive model under a single-step irreversible chemical reaction.
openaire   +2 more sources

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

Impact of Hydrogen/Natural Gas Blends on Partially Premixed Combustion Equipment: NO_x Emission and Operational Performance

Energies, 2022
Several North American utilities are planning to blend hydrogen into gas grids, as a short-term way of addressing the scalable demand for hydrogen and as a long-term decarbonization strategy for ‘difficult-to-electrify’ end uses. This study documents the
Paul Glanville, Alex Fridlyand, Brian Sutherland, Miroslaw Liszka, Yan Zhao, Luke Bingham, Kris Jorgensen   +6 more
doaj   +1 more source