Fire behaviour of selected polymeric materials: Numerical modelling and validation using microscale and bench scale test methods

Research output: ThesisDoctoral Thesis (compilation)

Abstract

The ability to predict fire behaviour of materials is of key interest to building materials industry. The
main reason for it is expensive fire testing and certification costs borne by the manufacturers to bring a finished product to market. Failure in a fire test leads to increased expenses in the product
development cycle leading to delayed realization of profits and low cost competitiveness in the
market. Numerical modelling and fire simulations is a less expensive method to predict the outcomes
of a real fire test. However, the state of the art models existing in literature suffer from several
shortcomings. A few of them are related to inadequacies related to material property data used in
them as input values. Others include modelling deficiencies pertaining to accurate description of
physicochemical processes involved in materials during the fire. Often hurdles in implementation of
appropriate numerical methods are also a cause of poor predictability of mathematical models. In this industrial PhD work, a novel one-dimensional computational pyrolysis model was developed using a combination of deterministic and stochastic approach. The tool is capable of prediction of key fire technical properties of interest obtained in a standard cone calorimeter device such as mass loss rate (MLR), heat release rate (HRR), total heat released (THR). The developed model could be
incorporated into a bigger CFD code and can be used for estimation of fire growth rate on
successively bigger material scale. The performance of novel pyrolysis model considers several
physicochemical transformation complexities occurring in the material and renders a satisfactory
performance of the investigated materials on microscale and bench scale level simulations.

Details

Authors
  • Abhishek Bhargava
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Engineering and Technologies

Keywords

  • DAEM, pyrolysis modelling, Polymer flammability, mass loss rate, Heat release rate (HRR)
Original languageEnglish
QualificationDoctor
Awarding Institution
Supervisors/Assistant supervisor
  • Patrick van Hees, Supervisor
  • Bjarne Paulsen Husted, Assistant supervisor
  • Lauridsen, Dan, Assistant supervisor, External person
Thesis sponsors
  • Danish Institute of Fire and Security Technology
  • European Commission
Award date2020 Mar 20
Place of PublicationLund
Publisher
  • Lund University, Faculty of Engineering
Print ISBNs978-91-7895-408-7
Electronic ISBNs978-91-7895-409-4
Publication statusPublished - 2020 Feb 10
Publication categoryResearch

Bibliographic note

Defence details Date: 2020-03-20 Time: 9:15 Place: Lecture hall V:B, building V, John Ericssons väg 1, Faculty of Engineering LTH, Lund University, Lund. External reviewer(s) Name: Bourbigot, Serge Title: Prof. Affiliation: ENSCL, France. ---

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Related research output

Abhishek Bhargava, Patrick Van Hees, Bjarne Husted, Antonio Rodolfo Junior & Corina Neumeister, 2019, In: Journal of Fire Sciences. 37, 1, p. 18-46

Research output: Contribution to journalArticle

Blanca Andres, Karlis Livkiss, Juan P. Hidalgo, Patrick van Hees, Luke Bisby, Nils Johansson & Abhishek Bhargava, 2018 Jul 1, In: Journal of Fire Sciences. 36, 4, p. 315-341 27 p.

Research output: Contribution to journalArticle

Karlis Livkiss, Blanca Andres, Abhishek Bhargava & Patrick van Hees, 2018 May 1, In: Journal of Fire Sciences. 36, 3, p. 202-223 22 p.

Research output: Contribution to journalArticle

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