Simulating self-excited oscillations in the cold-flame combustion of a mixture of n-heptane with isooctane in an ideal-mixing reactor

1987 ◽  
Vol 23 (2) ◽  
pp. 137-142
Author(s):  
V. I. Bykov ◽  
T. P. Pushkareva ◽  
Ya. Yu. Stepanskii
Keyword(s):  
Flame Combustion ◽  
Ideal Mixing ◽  
Cold Flame

scholarly journals Variability of complex oscillatory regimes in the stochastic model of cold-flame combustion of a hydrocarbon mixture

2022 ◽  
Vol 380 (2217) ◽  
Author(s):  
I. Bashkirtseva ◽  
E. Slepukhina
Keyword(s):  
Deterministic Model ◽  
Three Dimensional ◽  
Hydrocarbon Mixture ◽  
Nonlinear Dynamical ◽  
Flame Combustion ◽  
Mixed Mode Oscillations ◽  
Random Forcing ◽  
Random Disturbances ◽  
Stable Equilibria ◽  
Cold Flame

Processes of the cold-flame combustion of a mixture of two hydrocarbons are studied on the base of a three-dimensional nonlinear dynamical model. Bifurcation analysis of the deterministic model reveals mono- and bistability parameter zones with equilibrium and oscillatory attractors. For this model, effects of random disturbances in the bistability parameter zone are studied. We show that random forcing causes transitions between coexisting stable equilibria and limit cycles with the formation of complex stochastic mixed-mode oscillations. Properties of these oscillatory regimes are studied by means of statistics of interspike intervals. A phenomenon of anti-coherence resonance is discussed. This article is part of the theme issue ‘Transport phenomena in complex systems (part 2)’.

Morphology and Structure of Carbon Nanocoils Synthesized via the Flame Combustion of Ethanol

2008 ◽  
Vol 23 (6) ◽  
pp. 1179-1183 ◽  
Author(s):  
Lan-Juan WANG
Keyword(s):  
Flame Combustion ◽  
Morphology And Structure

First and second laws of thermodynamics: relationship, “inconsistency”, hidden effects

2020 ◽  
pp. 63-73
Author(s):  
A. M. Savchenko ◽  
Yu. V. Konovalov ◽  
A. V. Laushkin
Keyword(s):  
Free Energy ◽  
Internal Energy ◽  
Second Law Of Thermodynamics ◽  
Second Law ◽  
Entropy Of Mixing ◽  
Ideal Mixing ◽  
Laws Of Thermodynamics ◽  
Relationship Of ◽  
The Relationship

The relationship of the first and second laws of thermodynamics based on their energy nature is considered. It is noted that the processes described by the second law of thermodynamics often take place hidden within the system, which makes it difficult to detect them. Nevertheless, even with ideal mixing, an increase in the internal energy of the system occurs, numerically equal to an increase in free energy. The largest contribution to the change in the value of free energy is made by the entropy of mixing, which has energy significance. The entropy of mixing can do the job, which is confirmed in particular by osmotic processes.

The High Pressure Rheology of Mixtures

2004 ◽  
Vol 126 (4) ◽  
pp. 697-702 ◽  
Author(s):  
Scott Bair
Keyword(s):  
Molecular Weight ◽  
High Pressure ◽  
Binary Systems ◽  
Viscosity Coefficient ◽  
Shear Thinning ◽  
Newtonian Viscosity ◽  
Double Shear ◽  
Ideal Mixing ◽  
Viscosity Behavior ◽  
Single Flow

The Newtonian mixing rules for several binary systems have been experimentally investigated. Some systems show non-ideal mixing response and for some systems the non-ideal response is pressure-dependent, yielding an opportunity for manipulation of the pressure-viscosity behavior to advantage. The mixing of differing molecular weight “straight cuts” can produce very different pressure-viscosity response. This behavior underscores the difficulty in predicting the pressure-viscosity coefficient based upon chemical structure and ambient viscosity since the molecular weight distribution is also important, but it also provides another opportunity to control the high-pressure response by blending. The first experimental observation of double shear-thinning within a single flow curve is reported. Blending then provides the capability of adjusting not only the Newtonian viscosity but also the non-Newtonian shear-thinning response as well.

Self-Cleaning Films with High Transparency Based on TiO2Nanoparticles Synthesized via Flame Combustion

2010 ◽  
Vol 49 (8) ◽  
pp. 3654-3662 ◽  
Author(s):  
Huiting Wang ◽  
Yanjie Hu ◽  
Ling Zhang ◽  
Chunzhong Li
Keyword(s):  
High Transparency ◽  
Flame Combustion ◽  
Self Cleaning

Synthesis of uniform diamond films by flat flame combustion of acetylene/hydrogen/oxygen mixtures

1992 ◽  
Vol 91 (3-4) ◽  
pp. 239-245 ◽  
Author(s):  
Motohide Murayama ◽  
Kiyoshi Uchida
Keyword(s):  
Diamond Films ◽  
Flame Combustion ◽  
Flat Flame

Flat-flame combustion of natural gas in a recuperative glass-melting furnace

1988 ◽  
Vol 45 (3) ◽  
pp. 121-123
Author(s):  
V. I. Kirilenko ◽  
I. S. Il'yashenko ◽  
A. I. Es'kov ◽  
I. B. Smulyanskii ◽  
V. I. Basov
Keyword(s):  
Natural Gas ◽  
Glass Melting ◽  
Melting Furnace ◽  
Glass Melting Furnace ◽  
Flame Combustion ◽  
Flat Flame

Liquid flame: combustion of metal suspensions in liquid sulfur

2005 ◽  
Vol 30 (2) ◽  
pp. 2561-2568 ◽  
Author(s):  
Samuel Goroshin ◽  
Lorena Camargo ◽  
John H.S. Lee
Keyword(s):  
Liquid Sulfur ◽  
Flame Combustion

Studying flame combustion of coal-water slurries in the furnaces of power-generating boilers

2012 ◽  
Vol 59 (6) ◽  
pp. 439-445 ◽  
Author(s):  
K. V. Osintsev
Keyword(s):  
Flame Combustion
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