Results 21 to 30 of about 1,995,636 (179)

Scaling of turbulent flame speed for expanding flames with Markstein diffusion considerations [PDF]

Physical Review E, 2013
In this paper we clarify the role of Markstein diffusivity, which is the product of the planar laminar flame speed and the Markstein length, on the turbulent flame speed and its scaling, based on experimental measurements on constant-pressure expanding turbulent flames.
Swetaprovo, Chaudhuri, Fujia, Wu, Chung K, Law   +2 more
openaire   +2 more sources

Numerical Investigation of the Effects of Diffusion Time on the Mechanisms of Transition from a Turbulent Jet Flame to Detonation in a H₂-Air Mixture

Fire, 2023
The current study primarily aimed to simulate detonation initiation via turbulent jet flame acceleration in partial-premixed H2-air mixtures. Different vertical concentration gradients were generated by varying the duration of hydrogen injection ...
Mohammad Hossein Shamsaddin Saeid, Javad Khadem, Sobhan Emami, Chang Bo Oh   +3 more
doaj   +1 more source

Circle grid fractal plate as a turbulent generator for premixed flame: an overview [PDF]

, 2013
This review paper focuses to ascertain a new approach in turbulence generation on the structure of premixed flames and external combustion using a fractal grid pattern.
Othman, Mohd Fahmi, Khalid, Amir, Wirman, Eka Putra, Eramahi, Eka, Efendi, Efendi, Tiey, Athirah, Andika, Erwin Saputra, Manshoor, Bukhari, Arwansyah, Arwansyah, Yaakob, Maizatul Azrina, Mohd Kassim, Amir Hashim, Radin Mohamed, Radin Maya Saphira, Al-Gheethi, Adel, Saputra, Edriagus   +13 more
core   +1 more source

Experimental Study on Horizontal Flame Spread of Dual-Flame Sources for Building Façade Energy Conservation FPU Foam Under the Effect of Lateral Wind

Frontiers in Energy Research, 2022
The thermal safety of building façade energy conservation materials is commonly affected by the wind in the surrounding environment. In addition, multiple fire sources might be formed because of the secondary ignition of the primary fire source.
Wei Zhang, Jingwei Wang
doaj   +1 more source

A Data-Driven Methodology for the Simulation of Turbulent Flame Speed across Engine-Relevant Combustion Regimes

Energies, 2021
Turbulent combustion modelling in internal combustion engines (ICEs) is a challenging task. It is commonly synthetized by incorporating the interaction between chemical reactions and turbulent eddies into a unique term, namely turbulent flame speed sT ...
Alessandro d’Adamo, Clara Iacovano, Stefano Fontanesi   +2 more
doaj   +1 more source

Influence of Turbulent Scalar Mixing Physics on Premixed Flame Propagation

Journal of Combustion, 2011
The influence of reactive scalar mixing physics on turbulent premixed flame propagation is studied, within the framework of turbulent flame speed modelling, by comparing predictive ability of two algebraic flame speed models: one that ...
H. Kolla, N. Swaminathan
doaj   +1 more source

Experimental and computational investigation of flame holders in combustion chambers at different th

Journal of Thermal Engineering, 2020
The effect on the dynamic stability of combustors with and without flame holders were investigated experimentally and computationally with thermal loads of 3, 5, and 9 kW.
Mohammed Kh Abbas ALHUMAİRİ, Samir Gh. YAHYA, Itimad D J AZZAWİ   +2 more
doaj   +1 more source

Numerical Simulation of Laminar and Turbulent Methane/Air Flames Based on a DRG-Derived Skeletal Mechanism

Eurasian Chemico-Technological Journal, 2020
Simulation of turbulent flames using detailed chemical mechanisms is still a challenge in numerical combustion due to the large number of species and the stiffness of the system of governing equations.
F. C. Minuzzi, Ch. Yu, U. Maas
doaj   +1 more source

Improvement and validation of a thermodynamic S.I. engine simulation code [PDF]

, 2003
This study was concerned with improvement and validation of a thermodynamic spark ignition engine simulation code developed in Leeds. Experimental validation data were generated using a central ignition, disc-shaped combustion chamber variant of a ...
Abdi Aghdam, Ebrahim
core   +5 more sources

Machine learning tabulation of thermochemistry of fuel blends

Applications in Energy and Combustion Science, 2022
The objective of the present work is to develop a machine learning tabulation methodology for thermochemistry that accounts for fuel blends. The approach is based on the hybrid flamelet/random data and multiple multilayer perceptrons (HFRD-MMLP ...
Tianjie Ding, Stelios Rigopoulos, W.P. Jones   +2 more
doaj   +1 more source