Effect of disorderness in two-dimensional discrete adiabatic combustion waves in a heterogeneous solid medium under stable regime

2019 ◽  
Vol 99 (6) ◽  
Author(s):  
Naine Tarun Bharat ◽  
Debi Prasad Mishra
Keyword(s):  
Solid Medium ◽  
Two Dimensional ◽  
Combustion Waves ◽  
Stable Regime ◽  
Heterogeneous Solid

Solid Medium Labeling Applied to Two-Dimensional Gel Electrophoresis

1997 ◽  
Vol 245 (2) ◽  
pp. 245-247 ◽  
Author(s):  
Brian S. Miller ◽  
Amy K.H. Hsu ◽  
Eugenio Ferrari ◽  
Maria R. Diaz-Torres
Keyword(s):  
Gel Electrophoresis ◽  
Solid Medium ◽  
Two Dimensional ◽  
Two Dimensional Gel Electrophoresis

scholarly journals Initiation of combustion waves in solids, and the effects of geometry

2001 ◽  
Vol 43 (1) ◽  
pp. 149-163 ◽  
Author(s):  
J. Brindley ◽  
J. F. Griffiths ◽  
A. C. McIntosh ◽  
J. Zhang
Keyword(s):  
Initial Temperature ◽  
Solid Medium ◽  
Boundary Surface ◽  
Critical Conditions ◽  
Main Concern ◽  
Initial Temperature Distribution ◽  
Combustion Waves ◽  
Finite Systems ◽  
The Waves ◽  
Central Sphere

AbstractIn a recent paper Weber et al. [9] examined the propagation of combustion waves in a semi-infinite gaseous or solid medium. Whereas their main concern was the behaviour of waves once they had been initiated, we concentrate here on the initiation of such waves in a solid medium and have not examined in detail the steadiness or otherwise of the waves subsequent to their formation. The investigation includes calculations for finite systems. The results for a slab, cylinder and sphere are compared.Critical conditions for initiation of ignition by a power source are established. For a slab the energy input is spread uniformly over one boundary surface. In the case of cylindrical or spherical symmetry it originates from a cylindrical core or from a small, central sphere, respectively. The size of source and reactant body is important in the last two cases. With the exception of the initial temperature distribution, the equations investigated are similar in form to those of Weber et al. [5,9] and, as a prelude to the present study, with very simple adaptation, it has been possible to reproduce the results of the earlier work. We then go on to report the result of calculations for the initiation of ignition under different geometries with various initial and boundary conditions.

Discrete combustion waves of two-dimensional nanocomposites

2015 ◽  
Vol 51 (3) ◽  
pp. 338-346 ◽  
Author(s):  
S. A. Rashkovskii ◽  
A. Yu. Dolgoborodov
Keyword(s):  
Two Dimensional ◽  
Combustion Waves

Multiplicity of Premixed Flames Under the Effect of Heat Loss

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
Eman Al-Sarairah ◽  
Chaouki Ghenai ◽  
Ahmed Hachicha
Keyword(s):  
Strain Rate ◽  
Heat Loss ◽  
Combustion Wave ◽  
Premixed Flames ◽  
Lewis Number ◽  
The Other ◽  
Premixed Flame ◽  
Two Dimensional ◽  
Combustion Waves ◽  
Loss Parameter

We investigate numerically the effect of heat loss and strain rate on the premixed flame edges encountered in a two-dimensional counterflow configuration for Lewis number higher than one. Under nonadiabatic conditions, multiple flame edges and multiple propagation speeds (positive and negative) are discussed. Different regions of multiple propagation speeds have been revealed ranging from two to four, depending on the value of the heat loss parameter and Damkohler number, which is inversely proportional to the strain rate. A combustion wave is modeled by connecting a strongly burning flame on one side of the burner to a weakly burning flame on the other side. These combustion waves are changing with increasing Dam number into flame edges with the fact that the strongly burning flame is the dominant.

Curves formed by colonies of micro-organisms growing on a plane surface

1945 ◽  
Vol 35 ◽  
pp. 14-19 ◽  
Author(s):  
Agnes H. Waddell
Keyword(s):  
Single Cell ◽  
Solid Medium ◽  
Plane Surface ◽  
Two Dimensional ◽  
Present Discussion ◽  
Whole Process ◽  
First Approximation ◽  
Constant Rate ◽  
Expanding Circle ◽  
Micro Organisms

In many cases, when a colony of micro-organisms such as moulds, yeasts or bacteria grows on the plane surface of a solid medium (e.g.agar), starting from a single cell, the colony tends to grow as an ever expanding circle. The reason for this is that every cell, if free from competition, can multiply at roughly a constant rate in all directions in a plane, limited by the fact that territory occupied by one cell cannot be occupied by another. For the purposes of the present discussion, we can assume, as a first approximation, that the whole process is two-dimensional.

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