Results 261 to 270 of about 124,974 (294)

The use of dynamic adaptive chemistry and tabulation in reactive flow simulations

Combustion and Flame, 2014
Abstract Detailed chemical kinetics is an integral component for predictive simulation of turbulent flames and is important for reliable prediction of flames and emissions. Major challenges of incorporation of detailed chemistry in flame simulations are induced by the large number of chemical species and the wide range of timescales involved in ...
Zhuyin Ren, Yufeng Liu, Tianfeng Lu, Liuyan Lu, Oluwayemisi O. Oluwole, Graham M. Goldin   +5 more
openaire   +1 more source

DNS with detailed and tabulated chemistry of engine relevant igniting systems

Combustion and Flame, 2014
Developments in modern engine technology are moving towards a regime with fuel injection uncoupled from combustion. Auto-ignition is an essential characteristic in these systems. The accurate prediction of this chemical process is of paramount importance.
Bekdemir, C., Somers, L.M.T., Goey, de, L.P.H.   +2 more
openaire   +1 more source

Tabulation of turbulent burning rates via a combination of a stochastic mixing model and tabulated chemistry

ZIB Report, 2008
In this paper we propose a technique for a priori turbulent flame speed tabulation (TFST) for a given parameter space in standard combustion- regime diagrams. It can be used as a subgrid-scale (SGS) model in Large Eddy Simulation (LES). In a first step, stationary laminar flamelets are computed and stored over the progress variable following the ideas ...
Schmidt, H., Oevermann, M., Bastiaans, R.J.M., Kerstein, A.R.   +3 more
openaire   +1 more source

Dynamic adaptive chemistry with mechanisms tabulation and in situ adaptive tabulation (ISAT) for computationally efficient modeling of turbulent combustion

Combustion and Flame, 2019
Abstract To deal with the major challenges of combustion simulation with detailed chemical kinetics, a new dynamic adaptive chemistry method with mechanisms tabulation (DAC-ST: DAC with single tabulation) and a method in which DAC-ST is combined with the ISAT (In Situ Adaptive Tabulation) approach (DAC-DT: DAC with double tabulation) to accelerate ...
Jian An, Guoqiang He, Fei Qin, Xianggeng Wei, Bing Liu   +4 more
openaire   +1 more source

Improving chemistry tabulation with partition of unity networks.

Proposed for presentation at the 18th International Conference on Numerical Combustion held May 8-11, 2022 in San Diego, CA., 2022
Elizabeth Armstrong, Michael Hansen, Robert Knaus, Nathaniel Trask, John Hewson, James Sutherland   +5 more
openaire   +1 more source

3D Numerical Simulation of a Laminar Experimental SWQ Burner with Tabulated Chemistry

Flow, Turbulence and Combustion, 2017
Flame-wall interaction (FWI) plays an important role in enclosed combustion systems. For avoiding the complexity of close to reality combustors, in this study an atmospheric premixed V-shaped flame interacting with an isothermal cold wall in a side wall quenching (SWQ) configuration is investigated. A stoichiometric methane/air mixture is used as fuel.
A. Heinrich, S. Ganter, G. Kuenne, C. Jainski, A. Dreizler, J. Janicka   +5 more
openaire   +1 more source

MODELING FLAME STABILIZATION BY HEAT LOSSES USING FILTERED TABULATED CHEMISTRY FOR LES

Proceeding of Eighth International Symposium on Turbulence and Shear Flow Phenomena, 2013
no ...
Mercier, Renaud, Auzillon, Pierre, Darabiha, Nasser, Gicquel, Olivier, Veynante, Denis, Fiorina, Benoit, Moureau, Vincent   +6 more
openaire   +2 more sources

Tabulated chemistry for turbulent combustion modeling and simulation

Tabulation de la cinétique chimique pour la modélisation et la simulation de la combustion turbulente Cette thèse se situe dans le cadre de la simulation numérique de la combustion turbulente à l’aide de méthodes de tabulation de la cinétique chimique.
openaire   +1 more source

A Novel Approach for Efficient Storage and Retrieval of Tabulated Chemistry in Reactive Flow Simulations

2017
Turbulent combustion is a typical example of a multi-scale problem, coupling different ranges of time and length scales of the flow field and the chemical reactions. Due to scale separation and the availability of suitable coupling procedures, tabulated chemistry approaches have emerged as an effective method for describing turbulence-chemistry ...
Sebastian Popp, Steffen Weise, Christian Hasse   +2 more
openaire   +1 more source

Characterizing Tradeoffs in Memory, Accuracy, and Speed for Chemistry Tabulation Techniques

Combustion Science and Technology, 2022
Elizabeth Armstrong, John C. Hewson, James C. Sutherland   +2 more
openaire   +1 more source