Incorporation of Detailed Chemical Mechanisms in Reactive Flow Simulations Using Element-Flux Analysis

ABSTRACTBased on the analysis of extensive experimental data, we have formulated basic criteria necessary for the synthesis of a variety of oxides in the combustion mode, and defined optimum conditions for the production of high-surface area, well-crystalline nano-powders of desired phase composition and purity. Also, for the first time, detailed chemical mechanisms of interaction for various systems are identified, outlining specific roles of different fuels, oxidizers and thermal conditions

Download Full-text

Numerical strategies for detection of bifurcation points in the parametric continuation of model reactors with detailed chemical mechanisms

10.1063/1.5012382 ◽

2017 ◽

Cited By ~ 1

Author(s):

Luigi Acampora ◽

Francesco Saverio Marra

Keyword(s):

Chemical Mechanisms ◽

Bifurcation Points ◽

Parametric Continuation ◽

Detailed Chemical

Download Full-text

Multi-element Flux Analysis for the Incorporation of Detailed Kinetic Mechanisms in Reactive Simulations

Energy & Fuels ◽

10.1021/ef900803q ◽

2010 ◽

Vol 24 (1) ◽

pp. 309-317 ◽

Cited By ~ 14

Author(s):

Kaiyuan He ◽

Ioannis P. Androulakis ◽

Marianthi G. Ierapetritou

Keyword(s):

Flux Analysis ◽

Kinetic Mechanisms ◽

Element Flux

Download Full-text

Simulation of H2-Air Turbulent Diffusion Flame by the Combustion Model Using Chemical Equilibrium Combined With the Eddy Dissipation Concept

Volume 3: Combustion, Fire and Reacting Flow; Heat Transfer in Multiphase Systems; Heat Transfer in Transport Phenomena in Manufacturing and Materials Processing; Heat and Mass Transfer in Biotechnology; Low Temperature Heat Transfer; Environmental Heat Transfer; Heat Transfer Education; Visualization of Heat Transfer ◽

10.1115/ht2009-88429 ◽

2009 ◽

Author(s):

Kazui Fukumoto ◽

Yoshifumi Ogami

Keyword(s):

Chemical Equilibrium ◽

Diffusion Flame ◽

Turbulent Diffusion ◽

Combustion Products ◽

Combustion Model ◽

Intermediate Species ◽

Turbulent Diffusion Flame ◽

Chemical Mechanisms ◽

Equilibrium Method ◽

Detailed Chemical

This research aims at developing a turbulent diffusion combustion model based on the chemical equilibrium method and chemical kinetics for simplifying complex chemical mechanisms. This paper presents a combustion model based on the chemical equilibrium method and the eddy dissipation concept (CE-EDC model); the CE-EDC model is validated by simulating a H2-air turbulent diffusion flame. In this model, the reaction rate of fuels and intermediate species is estimated by using the equations of the EDC model. Further, the reacted fuels and intermediate species are assumed to be in chemical equilibrium; the amount of the other species is determined from the amount of the reacted fuels, intermediate species, and air as reactants by using the Gibbs free energy minimization method. An advantage of the CE-EDC model is that the amount of the combustion products can be determined without using detailed chemical mechanisms. The results obtained by using this model were in good agreement with the experimental and computational data obtained by using the EDC model. Using this model, the amount of combustion products can be calculated without using detailed chemical mechanisms. Further, the accuracy of this model is same as that of the EDC model.

Download Full-text

Comparison of Reactive Flow Simulations for a LOX/CH4 Multi-element Rocket Engine

MATEC Web of Conferences ◽

10.1051/matecconf/201930407007 ◽

2019 ◽

Vol 304 ◽

pp. 07007

Author(s):

Ainslie D. French ◽

Luigi Cutrone ◽

Antonio Schettino ◽

Marco Marini ◽

Francesco Battista ◽

...

Keyword(s):

Experimental Data ◽

Boundary Conditions ◽

Numerical Simulations ◽

Rocket Engine ◽

Engine Performance ◽

Heat Fluxes ◽

Reactive Flow ◽

Flow Data ◽

Flow Simulations ◽

Experiment Validation

This study details the reactive flow simulations of a LOX/CH4 Multi-element rocket engine. The work has been conducted within the framework of the HYPROB-BREAD project whose main objective is the design, manufacture and testing of a LOX/LCH4 regeneratively cooled ground demonstrator. Numerical simulations have been carried out with both commercial software and CIRA software developed in house. Two sets of boundary conditions, nominal and experimental, have been applied from which a code-to-code validation has been effected with the former and a code-to-experiment validation with the latter. The results presented include both flow data and heat fluxes as well as parameters associated with engine performance, and indicate an excellent agreement with experimental data of a LOX/CH4 Multi-element rocket engine.

Download Full-text