Results 261 to 270 of about 1,357,733 (304)

Parallel simulation of reacting flows using detailed chemistry

2005
We described in this paper the development of a parallel Direct Numerical Simulation code designed to solve the reactive Navier-Stokes equations with accurate models for the reactive and transport properties. We proved that the fully explicit time-integration leads to high parallel efficiencies, provided a dynamic load balancing procedure is used ...
Dominique Thévenin, Frank Behrendt, Ulrich Maas, Jürgen Warnatz   +3 more
openaire   +1 more source

A Detailed Chemistry Simulation of the SI-HCCI Transition

SAE International Journal of Fuels and Lubricants, 2010
<div class="section abstract"><div class="htmlview paragraph">A Stochastic Reactor Model (SRM) has been used to simulate the transition from Spark Ignition (SI) mode to Homogeneous Charge Compression Ignition (HCCI) mode in a four cylinder in-line four-stroke naturally aspirated direct injection SI engine with cam profile switching. The SRM
Jonathan Etheridge, Sebastian Mosbach, Markus Kraft, Hao Wu, Nick Collings   +4 more
openaire   +1 more source

Simulation of detailed chemistry in a turbulent combustor flow

Symposium (International) on Combustion, 1996
This paper describes the inclusion of detailed chemical reaction mechanisms in the framework of a turbulent flame simulation. Calculations are based on a finite-volume solution procedure including submodels for turbulent flow, radiative heat transfer, combustion of fuel, and pollutant formation.
H.C. Magel, U. Schnell, K.R.G. Hein
openaire   +1 more source

Dual timestepping methods for detailed combustion chemistry

Combustion Theory and Modelling, 2016
In this work, we develop and study several dual time integration methods for the solution of stiff, explosive differential equations governing combustion chemistry. Dual time integration is an implicit method wherein the sub-iteration process of each timestep is performed as a steady-state integration process, rather than the commonly used Newton ...
Michael Alan Hansen, James Clayton Sutherland   +1 more
openaire   +1 more source

Asymptotic methods for flames with detailed chemistry

2008
Article de synthese sur les nouvelles methodes asymptotiques utilisees pour la description de structures et de comportements de flammes de premelange et de ...
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Development of a detailed surface chemistry framework in DSMC

Computers & Fluids
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Krishnan Swaminathan Gopalan, Arnaud Borner, Kelly A. Stephani   +2 more
openaire   +1 more source

Large-Scale Models of Radiation Chemistry and the Principle of Detailed Balancing

The Journal of Physical Chemistry A, 2019
Large-scale kinetic models containing more than 50 homogeneous reaction steps have been developed to help understand the behavior of actinide solutions in various circumstances. One specific objective is to understand the behaviors in nitrate solutions as such solutions are used in actinide separations.
David M. Stanbury, Jordan Harshman
openaire   +2 more sources

Modeling of Turbulent Diffusion Flames with Detailed Chemistry

1988
Because of their technical relevance chemically reacting turbulent flows have attracted increased interest in recent years. For instance, the need of high combustion efficiency and decreased pollutant emission from turbulent combustion devices has made great demands upon methods of prediction and calculation of these flows. As a consequence, models are
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Numerical studies of the heterogeneous combustion of char using detailed chemistry

Chemosphere, 2001
The oxidation of graphite is used as a model system for the combustion of char. In order to understand this oxidation process a stagnation-point flow of an oxygen stream on a graphite surface is investigated numerically. The chemical reactions in the gas phase as well as on the surface are modelled by a series of elementary steps. The surface reactions
G, Miessen, F, Behrendt, O, Deutschmann, J, Warnatz   +3 more
openaire   +2 more sources

Detailed modeling of n-butane autoignition chemistry

Combustion and Flame, 1994
Abstract Two versions of a detailed chemical kinetic model of n-butane autoignition are proposed. The key distinctions between the versions are the exclusion (Model I) or inclusion (Model II) of the direct abstraction or apparently bimolecular path of the reaction HO2 + HO2 → H2O2 + O2, and the selection of rate parameters for the reaction C2H5 + O2 →
openaire   +1 more source