scholarly journals PACKAGE (Plasma Analysis, Chemical Kinetics and Generator Efficiency): a computer program for the calculation of partial chemical equilibrium/partial chemical rate controlled composition of multiphased mixtures under one dimensional steady flow

1980 ◽  
Author(s):  
V. Yousefian ◽  
M.H. Weinberg ◽  
R. Haimes
Keyword(s):  
Computer Program ◽  
Steady Flow ◽  
Chemical Kinetics ◽  
Chemical Equilibrium ◽  
Plasma Analysis ◽  
One Dimensional ◽  
Rate Controlled ◽  
Partial Chemical ◽  
Chemical Rate

Chemical equilibrium and chemical kinetics

2018 ◽  
Author(s):  
Dennis Sherwood ◽  
Paul Dalby
Keyword(s):  
Free Energy ◽  
Equilibrium Constant ◽  
Gibbs Free Energy ◽  
Chemical Kinetics ◽  
Chemical Equilibrium ◽  
First Principles ◽  
Effect Of Temperature ◽  
Total System ◽  
Free Energies

Building on the previous chapter, this chapter examines gas phase chemical equilibrium, and the equilibrium constant. This chapter takes a rigorous, yet very clear, ‘first principles’ approach, expressing the total Gibbs free energy of a reaction mixture at any time as the sum of the instantaneous Gibbs free energies of each component, as expressed in terms of the extent-of-reaction. The equilibrium reaction mixture is then defined as the point at which the total system Gibbs free energy is a minimum, from which concepts such as the equilibrium constant emerge. The chapter also explores the temperature dependence of equilibrium, this being one example of Le Chatelier’s principle. Finally, the chapter links thermodynamics to chemical kinetics by showing how the equilibrium constant is the ratio of the forward and backward rate constants. We also introduce the Arrhenius equation, closing with a discussion of the overall effect of temperature on chemical equilibrium.

Simulation of H2-Air Turbulent Diffusion Flame by the Partial Chemical Equilibrium Method

2007 ◽  
Author(s):  
Kazui Fukumoto ◽  
Yoshifumi Ogami
Keyword(s):  
Chemical Equilibrium ◽  
Molecular Diffusion ◽  
Burning Velocity ◽  
Chemical Species ◽  
Combustion Products ◽  
Turbulent Diffusion Flame ◽  
Combustion Gases ◽  
Equilibrium Method ◽  
Dissipation Model ◽  
Partial Chemical

This paper describes an application of the partial chemical equilibrium method considered chemical kinetics in computational fluid dynamics (CFD). In this method, fuels and oxidants are mixed at a turbulent rate so that a mixture gas of fuel and oxygen is generated. Next, the mixture gas of fuel and oxygen is burnt by molecular diffusion thereby resulting in combustion gases. The turbulent mixture rate is estimated by the eddy dissipation model and the burning velocity is evaluated by the Arrhenius equation. Finally, the combustion products are calculated by the chemical equilibrium method by using the combustion gases. One of the advantages of this method is its ability to calculate the combustion products without using chemical equations. The chemical equilibrium method requires only thermo-chemical functions (specific heat, standard enthalpy, etc). This method can be applied to incinerators or some complex combustion instruments and it can predict the intermediate chemical species of dioxins, etc.

Experimental studies of the propagation of combustion in solids

1992 ◽  
Vol 339 (1654) ◽  
pp. 387-394 ◽  
Keyword(s):  
Heat Transfer ◽  
Thermal Analysis ◽  
Steady State ◽  
Chemical Kinetics ◽  
Profile Analysis ◽  
Numerical Models ◽  
Experimental Studies ◽  
Dimensional Model ◽  
Thermal Methods ◽  
One Dimensional

The application of thermal methods to the study of steady-state combustion is described. Such methods provide a route to information on heat transfer and chemical kinetics which forms a basis for the implementation of numerical models. The experimental results from thermal analysis and temperature profile analysis have been examined within the context of a simple pseudo one-dimensional model of propagation offering some confirmation of the validity of the approach.

scholarly journals Description of the transformation of chemical species using a combination of chemical kinetics and chemical equilibrium

2011 ◽  
Vol 9 (3) ◽  
pp. 28-33 ◽  
Author(s):  
Jiří Hvězda
Keyword(s):  
Chemical Kinetics ◽  
Chemical Equilibrium ◽  
Chemical Species

SHRNUTÍ Tato prace prezentuje novy přistup k numericke simulaci chemicke přeměny složek v průběhu hořeni. V připadech abnormalně rychlych chemickych reakci je kineticke schema kombinovano se schematem rovnovažnym. Timto způsobem jsou řešeny važne vypočetni problemy jako je strnulost soustavy rovnic na straně jedne či numericka nestabilita na straně druhe. Navržena procedura je ověřena na připadu hořeni vodiku popsaneho reakčnim mechanismem obsahujicim 23 paralelně probihajicich obecně vratnych reakci. Funkčni sub-model chemicke transformace bude implementovan do vice-zonoveho modelu spalovani pro řešeni chemickych procesů ve frontě plamene a post-plamennych oblastech.

SAND PILE AS A UNIVERSAL COMPUTER

1996 ◽  
Vol 07 (02) ◽  
pp. 113-122 ◽  
Author(s):  
ERIC GOLES ◽  
MAURICE MARGENSTERN
Keyword(s):  
Computer Program ◽  
Logic Gates ◽  
One Dimensional ◽  
Sand Pile ◽  
Pile Model

We show that the sand pile model is able to simulate, by specific configurations, logic gates and registers and, therefore any computer program. Further, we give its interpretation in terms of a set of several one-dimensional interacting avalanches.

Solutions of one dimensional steady flow of dusty gas in an anholonomic co-ordinate system

1999 ◽  
Vol 109 (4) ◽  
pp. 435-440
Author(s):  
C. S. Bagewadi ◽  
A. N. Shantharajappa
Keyword(s):  
Steady Flow ◽  
Dusty Gas ◽  
One Dimensional
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