A numerical study is presented of the phenomenology of ignition, and
initiation of combustion waves, in a model representing a spherical
power source embedded in a concentric spherical volume of combustible
material of relatively low exothermicity. For simplicity, one-step
chemistry is assumed, and diffusion of oxygen or gaseous products
is neglected. The results show unexpected behaviour for small-sized
power sources, in which, over a range of source radii, there are
two distinct critical values for the power, with an apparently safe
region occupying some of the range between them. Possible safety
implications for chemical plant operation are discussed.
This is the reference which triggered the hotspot project and connection
with Leeds Uni. Contains the Z shaped curve for critical power vs
hot spot size with a possible region where with increasing power
there might be a region without propagation of bulk combustion.
%0 Journal Article
%1 Brindley:2001
%A Brindley, J.
%A Griffiths, J. F.
%A McIntosh, A. C.
%D 2001
%J Chemical Engineering Science
%K Accidental Autoignition Combustion Heat Hot Mathematical Modeling Numerical Safety Temperature Theoretical distribution explosion ignition model simulation spot study transfer
%N 6
%P 2037--2046
%R http://dx.doi.org/10.1016/S0009-2509(00)00429-2
%T Ignition phenomenology and criteria associated with hotspots embedded
in a reactive material
%U http://www.sciencedirect.com/science/article/B6TFK-42MN6HT-3/2/d6882d2fb25e08f7f3b67b5f908e6852
%V 56
%X A numerical study is presented of the phenomenology of ignition, and
initiation of combustion waves, in a model representing a spherical
power source embedded in a concentric spherical volume of combustible
material of relatively low exothermicity. For simplicity, one-step
chemistry is assumed, and diffusion of oxygen or gaseous products
is neglected. The results show unexpected behaviour for small-sized
power sources, in which, over a range of source radii, there are
two distinct critical values for the power, with an apparently safe
region occupying some of the range between them. Possible safety
implications for chemical plant operation are discussed.
@article{Brindley:2001,
abstract = {A numerical study is presented of the phenomenology of ignition, and
initiation of combustion waves, in a model representing a spherical
power source embedded in a concentric spherical volume of combustible
material of relatively low exothermicity. For simplicity, one-step
chemistry is assumed, and diffusion of oxygen or gaseous products
is neglected. The results show unexpected behaviour for small-sized
power sources, in which, over a range of source radii, there are
two distinct critical values for the power, with an apparently {\em{safe}}
region occupying some of the range between them. Possible safety
implications for chemical plant operation are discussed.},
added-at = {2010-01-05T23:12:10.000+0100},
author = {Brindley, J. and Griffiths, J. F. and McIntosh, A. C.},
biburl = {https://www.bibsonomy.org/bibtex/2952e504d9b436205ee74aa8ddf479a4e/sjp},
doi = {http://dx.doi.org/10.1016/S0009-2509(00)00429-2},
interhash = {4e8581476674910f6a966d915c265c2b},
intrahash = {952e504d9b436205ee74aa8ddf479a4e},
journal = {Chemical Engineering Science},
keywords = {Accidental Autoignition Combustion Heat Hot Mathematical Modeling Numerical Safety Temperature Theoretical distribution explosion ignition model simulation spot study transfer},
month = {March},
number = 6,
pages = {2037--2046},
review = {This is the reference which triggered the hotspot project and connection
with Leeds Uni. Contains the Z shaped curve for critical power vs
hot spot size with a possible region where with increasing power
there might be a region without propagation of bulk combustion.},
timestamp = {2010-01-19T17:39:44.000+0100},
title = {Ignition phenomenology and criteria associated with hotspots embedded
in a reactive material},
url = {http://www.sciencedirect.com/science/article/B6TFK-42MN6HT-3/2/d6882d2fb25e08f7f3b67b5f908e6852},
volume = 56,
year = 2001
}