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Numerical simulations of pyrolysis of wet charring materials using a one-dimensional enthalpy based model

Shivanand Wasan UGent, Pieter Rauwoens UGent, Jan Vierendeels UGent and Bart Merci UGent (2009) European Combustion Meeting, 4th, Proceedings.
abstract
Solid phase modelling coupled to gas phase combustion of volatiles helps to investigate the flame spread over solids. The present work focuses on the solid phase. Numerical simulations of pyrolysis of wet charring materials are performed. When the solid is exposed to an external heat flux, the model is such that the moisture present first flows out, leaving behind dry solid. This solid then further heats up and finally generates a mass flow rate of combustible volatiles during the 'pyrolysis' process, i.e. the degradation of the solid. Evaporation and pyrolysis, possibly occurring at the same time, are assumed to take place in infinitely thin fronts. Pyrolysis is thus modelled as an infinitely fast, irreversible endothermic process at the 'pyrolysis temperature' (Tpyr) and as such, all kinetics are ignored. The cases considered are one-dimensional in nature, in order to focus on the principal model performance. Enthalpy is the basic model variable. The temperature distribution inside the material, along with the evaporation and pyrolysis front positions, are related to the distribution of enthalpy. A piecewise linear temperature field representation is adopted.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
simulations, flame spread, Fire
in
European Combustion Meeting, 4th, Proceedings
pages
6 pages
conference name
4th European Combustion Meeting
conference location
Vienna, Austria
conference start
2009-04-14
conference end
2009-04-17
ISBN
978-3-902655-06-6
language
English
UGent publication?
yes
classification
C1
copyright statement
I have retained and own the full copyright for this publication
id
607571
handle
http://hdl.handle.net/1854/LU-607571
date created
2009-05-05 15:44:21
date last changed
2009-05-15 12:22:03
@inproceedings{607571,
  abstract     = {Solid phase modelling coupled to gas phase combustion of volatiles helps to investigate the flame spread over solids. The present work focuses on the solid phase. Numerical simulations of pyrolysis of wet charring materials are performed. When the solid is exposed to an external heat flux, the model is such that the moisture present first flows out, leaving behind dry solid. This solid then further heats up and finally generates a mass flow rate of combustible volatiles during the 'pyrolysis' process, i.e. the degradation of the solid. Evaporation and pyrolysis, possibly occurring at the same time, are assumed to take place in infinitely thin fronts. Pyrolysis is thus modelled as an infinitely fast, irreversible endothermic process at the 'pyrolysis temperature' (Tpyr) and as such, all kinetics are ignored. The cases considered are one-dimensional in nature, in order to focus on the principal model performance. Enthalpy is the basic model variable. The temperature distribution inside the material, along with the evaporation and pyrolysis front positions, are related to the distribution of enthalpy. A piecewise linear temperature field representation is adopted.},
  author       = {Wasan, Shivanand and Rauwoens, Pieter and Vierendeels, Jan and Merci, Bart},
  booktitle    = {European Combustion Meeting, 4th, Proceedings},
  isbn         = {978-3-902655-06-6},
  keyword      = {simulations,flame spread,Fire},
  language     = {eng},
  location     = {Vienna, Austria},
  pages        = {6},
  title        = {Numerical simulations of pyrolysis of wet charring materials using a one-dimensional enthalpy based model},
  year         = {2009},
}

Chicago
Wasan, Shivanand, Pieter Rauwoens, Jan Vierendeels, and Bart Merci. 2009. “Numerical Simulations of Pyrolysis of Wet Charring Materials Using a One-dimensional Enthalpy Based Model.” In European Combustion Meeting, 4th, Proceedings.
APA
Wasan, S., Rauwoens, P., Vierendeels, J., & Merci, B. (2009). Numerical simulations of pyrolysis of wet charring materials using a one-dimensional enthalpy based model. European Combustion Meeting, 4th, Proceedings. Presented at the 4th European Combustion Meeting.
Vancouver
1.
Wasan S, Rauwoens P, Vierendeels J, Merci B. Numerical simulations of pyrolysis of wet charring materials using a one-dimensional enthalpy based model. European Combustion Meeting, 4th, Proceedings. 2009.
MLA
Wasan, Shivanand, Pieter Rauwoens, Jan Vierendeels, et al. “Numerical Simulations of Pyrolysis of Wet Charring Materials Using a One-dimensional Enthalpy Based Model.” European Combustion Meeting, 4th, Proceedings. 2009. Print.