Results 51 to 60 of about 21,455 (208)

A simple model of mixing and chemical reaction in a turbulent shear layer [PDF]

, 1981
Arguments are presented to show that the concept of gradient diffusion is inapplicable to mixing in turbulent shear layers. A new model is proposed for treating molecular mixing and chemical reaction in such flows at high Reynolds number.
Breidenthal, Brown, Brown, Chandrasada, Coles, Corcos, Corrsin, Dash, Dimotakis, Fiedler, J. E. Broadwell, Marble, Marble, Patnaik, Proudian, R. E. Breidenthal, Spalding, Toor, Uberoi, Walker, Williams, Witte   +21 more
core   +1 more source

Structure of Opposed Jet Turbulent Premixed Flames.

JSME International Journal Series B, 1997
In this study, a new ceramic opposed jet burner was designed to ensure the adiabaticity of the flame. In the opposed jet turbulent premixed flame, the concentrations of various stable species as well as the mean flame temperature distributions and structures have been investigated.
Yoshinobu KOTANI, Jin ITOH, Akira YOSHIDA   +2 more
openaire   +3 more sources

An SMLD joint PDF model for turbulent non-premixed combustion using the flamelet progress-variable approach

, 2015
This paper provides an improved flamelet/progress variable (FPV) model for the simulation of turbulent combustion, employing the statistically most likely distribution (SMLD) approach for the joint probability density function (PDF) of the mixture ...
Coclite, Alessandro, Cutrone, Luigi, De Palma, Pietro, Ihme, Matthias, Pascazio, Giuseppe   +4 more
core   +1 more source

Direct numerical simulation of turbulent premixed methane-ammonia-air jet flames

Journal of Thermal Science and Technology
Methane-ammonia blended combustion has emerged as a promising strategy to reduce carbon emissions while maximizing the utilization of existing fossil-fuel-based burners, serving as a viable intermediate step towards carbon neutrality.
Takumi SUWABE, Ye WANG, Sayaka SUZUKI, Mamoru TANAHASHI   +3 more
doaj   +1 more source

Large Eddy Simulation of a Turbulent Nonpremixed Jet Flame Using a Finite-Rate Chemistry Model [PDF]

, 2009
Large eddy simulation (LES) is conducted of a turbulent piloted nonpremixed methane jet flame. This flame has been studied experimentally at Sandia National Laboratories. The subgrid scale (SGS) closure in LES is based on the scalar filtered mass density
Pisciuneri, Patrick Henry
core  

Simulations of combustion roar in turbulent attached and lifted turbulent methane jet flames

Engineering Transactions, 2014
The present work presents sample results of preliminary computations of the turbulent aerothermodynamic flow field and of the noise generated by the flame front, due to turbulent fluctuations in the flame (combustion roar), in lifted and attached jet ...
P. MARAZIOTI, P. KOUTMOS
doaj  

Numerical Investigation of an OxyfuelNon-Premixed CombustionUsing a Hybrid Eulerian Stochastic Field/Flamelet Progress Variable Approach: Effects of H₂/CO₂Enrichment and Reynolds Number

Energies, 2018
In the present paper, the behaviour of an oxy-fuel non-premixed jet flame is numerically investigated by using a novel approach which combines a transported joint scalar probability density function (T-PDF) following the Eulerian Stochastic Field ...
Rihab Mahmoud, Mehdi Jangi, Benoit Fiorina, Michael Pfitzner, Amsini Sadiki   +4 more
doaj   +1 more source

Reaction zones and their structure in MILD combustion [PDF]

, 2014
Three-dimensional direct numerical simulation (DNS) of turbulent combustion under moderate and intense low-oxygen dilution (MILD) conditions has been carried out inside a cuboid with inflow and outflow boundaries on the upstream and downstreamfaces ...

core   +2 more sources

The Impacts of Three Flamelet Burning Regimes in Nonlinear Combustion Dynamics [PDF]

, 2018
Axisymmetric simulations of a liquid rocket engine are performed using a delayed detached-eddy-simulation (DDES) turbulence model with the Compressible Flamelet Progress Variable (CFPV) combustion model.
Nguyen, Tuan, Sirignano, William A.
core   +2 more sources

Numerical Simulation and Experimental Investigation of Multi-function Micro-plasma Jet and Alumina Particle Behaviour

MATEC Web of Conferences, 2016
Turbulent flow in multi-function micro-plasma spray, as well as the trajectories and state-changing course of alumina particles in the plasma jet were simulated.
Liu Gu, Wang Liuying, Wang Wei, Ge Chaoqun, Cai Yeping   +4 more
doaj   +1 more source