Results 21 to 30 of about 2,909 (260)

Flamelet Analysis of Turbulent Combustion [PDF]

, 2005
Three-dimensional direct numerical simulations are performed of turbulent combustion of initially spherical flame kernels. The chemistry is described by a progress variable which is attached to a flamelet library. The influence of flame stretch and curvature on the local mass burning rate is studied and compared to an analytical model. It is found that
Rob J. M. Bastiaans, S. M. Martin, Heinz Pitsch, Jeroen A. van Oijen, L. Philip H. de Goey   +4 more
openaire   +2 more sources

Computational study of influence of inflow port channel design on spark-ignition natural gas engine parameters

MATEC Web of Conferences, 2018
Resistance is The article presents the results of the research of a charge swirl motion influence on working process, engine parameters and NOx emissions of a spark ignition premixed natural gas engine. The charge swirl motion was organized by tangential
Patsey Pavel, Galyshev Yuriy
doaj   +1 more source

Comparison of Combustion Models for Lifted Hydrogen Flames within RANS Framework

Energies, 2019
Within the framework of a Reynolds averaged numerical simulation (RANS) methodology for modeling turbulence, a comparative numerical study of turbulent lifted H2/N2 flames is presented.
Ali Cemal Benim, Björn Pfeiffelmann
doaj   +1 more source

PIV Measurement and Turbulence Scale in Turbulent Combustion

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2005
AbstractWe have investigated turbulent combustion by PIV (Particle Image Velocimetry) technique. Comparing with LDV data, the validity of PIV measurements has been confirmed. Particularly, the conditions of sampling number and spatial resolution have been shown to yield reliable data using PIV.
YAMAMOTO, Kazuhiro, INOUE, Satoshi, YAMASHITA, Hiroshi, SHIMOKURI, Daisuke, ISHIZUKA, Satoru, ONUMA, Yoshiaki   +5 more
openaire   +2 more sources

Burning Rate in Impinging Jet Flames

Journal of Combustion, 2011
A method for evaluating burning velocity in premixed turbulent flames stabilized in divergent mean flows is quantitatively validated using numerical approximations of measured axial profiles of the mean combustion progress variable, mean and conditioned ...
A. N. Lipatnikov
doaj   +1 more source

On Lean Turbulent Combustion Modeling [PDF]

INCAS Bulletin, 2014
This paper investigates a lean methane-air flame with different chemical reaction mechanisms, for laminar and turbulent combustion, approached as one and bi-dimensional problem.
Constantin LEVENTIU, Sterian DANAILA
doaj   +1 more source

A Comparison between Statistical Behaviours of Scalar Dissipation Rate between Homogeneous MILD Combustion and Premixed Turbulent Flames

Energies, 2022
Three-dimensional Direct Numerical Simulations (DNS) data has been utilised to analyse statistical behaviours of the scalar dissipation rate (SDR) and its transport for homogeneous methane-air mixture turbulent Moderate or Intense Low oxygen Dilution ...
Frederick W. Young, Hazem S. A. M. Awad, Khalil Abo-Amsha, Umair Ahmed, Nilanjan Chakraborty   +4 more
doaj   +1 more source

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

Advanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian, Anh Thi Le, Anh Thi Van Le, Dung My Thi Dang, Tin Chanh Duc Doan, Chien Mau Dang, Martin Bolduc   +6 more
wiley   +1 more source

Comparative chemiluminescence investigation of OH* radicals in laminar and turbulent multi-fuel air- and oxy-fuel flames on semi-industrial and laboratory scale including NOX-formation

Fuel Processing Technology
Chemiluminescence emitted by the de-excitation of excited hydroxyl radicals (OH*), allows for several insights into combustion processes. The presented study investigates air- and oxy-fuel combustion of natural gas with hydrogen enrichment up to 100 ...
Stefan Schwarz, Georg Daurer, Joshua Slawatycki, Matthias Urban, René Prieler, Christian Gaber, Martin Demuth, Christoph Hochenauer   +7 more
doaj   +1 more source

Mesh convergence for turbulent combustion

Discrete and Continuous Dynamical Systems, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gong, Xiaoxue, Xu, Ying, Mahadeo, Vinay, Kaman, Tulin, Larsson, Johan, Glimm, James   +5 more
openaire   +1 more source