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DOI | 10.1016/J.COMBUSTFLAME.2012.08.004 | ||||
Año | 2012 | ||||
Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
A methodology for the estimation of ignition times on solid materials is presented. It is based on the observation that the time to ignition is proportional to the squared time integral of the incident heat flux. This relationship can be readily demonstrated for the classical solutions for time to ignition which consider constant incident heat fluxes. Thus, ignition times can be calculated only with the knowledge of the incident heat flux on the sample (gas-phase calculations) and experimental ignition results. This method is particularly useful when modelling wildfire propagation, where grid resolution is larger than some solid objects. Analytical solutions of the transient conduction problem for constant and ramping incident heat fluxes are discussed. The proportionality between the time to ignition and the squared integral of the incident heat flux was verified experimentally for constant and time-varying incident heat fluxes, showing that the proposed methodology can be applied to both cases. The methodology is outlined and an example is presented. (C) 2012 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
Ord. | Autor | Género | Institución - País |
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1 | Reszka, Pedro | Hombre |
Universidad Técnica Federico Santa María - Chile
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2 | Borowiec, P. | - |
UNIV EDINBURGH - Reino Unido
University of Edinburgh - Reino Unido The University of Edinburgh - Reino Unido |
3 | Steinhaus, T. | - |
UNIV EDINBURGH - Reino Unido
University of Edinburgh - Reino Unido The University of Edinburgh - Reino Unido |
4 | Torero, Jose Luis | Hombre |
UNIV EDINBURGH - Reino Unido
University of Edinburgh - Reino Unido The University of Edinburgh - Reino Unido |
Fuente |
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European Commission |
Sixth Framework Programme |
European Commission’s 6th Framework Programme |
Agradecimiento |
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The authors thank Dr. Nicolas Bal for providing useful data. This work was partly funded by the European Commission's 6th Framework Programme Projects "Fire Paradox" and "Predfire-Nano". |
The authors thank Dr. Nicolas Bal for providing useful data. This work was partly funded by the European Commission’s 6th Framework Programme Projects “Fire Paradox” and “Predfire-Nano”. |