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Synchronized smoldering combustion
RISE - Research Institutes of Sweden, Säkerhet och transport, Fire Research Norge. Western Norway University of Applied Sciences, Norway; Otto von Guericke University Magdeburg, Germany.ORCID-id: 0000-0003-0979-2369
Western Norway University of Applied Sciences, Norway.ORCID-id: 0000-0002-3119-9900
Western Norway University of Applied Sciences, Norway.ORCID-id: 0000-0002-4805-9007
2018 (engelsk)Inngår i: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 121, nr 5, s. 50002-p1-50002-p2Artikkel i tidsskrift, Letter (Fagfellevurdert) Published
Abstract [en]

Synchronized, pulsating temperatures are observed experimentally in smoldering fires.The entire sample volume (1.8 l) participates in the pulsations (pulse period 2–4 h). The synchronylasts up to 25 h and is followed by a spontaneous transition to either disordered combustion orself-extinguishment. The synchronization is obtained when the fuel bed is cooled to the brink ofextinguishment. Calculations for adiabatic conditions, including heat generation from combustion(nonlinear in temperature) and heat storage in sample (linear in temperature), predict divergingsample temperature. Experimentally, heat losses to surroundings (linear in temperature) preventtemperatures to increase without bounds and lead to pulsations.

sted, utgiver, år, opplag, sider
2018. Vol. 121, nr 5, s. 50002-p1-50002-p2
Emneord [en]
Fire, smoldering fire, industrial safety
Emneord [sv]
Brand, glödbrand, industri säkerhet
Emneord [no]
Brann, ulmebrann, industrisikkerhet
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Identifikatorer
URN: urn:nbn:se:ri:diva-33789DOI: 10.1209/0295-5075/121/50002Scopus ID: 2-s2.0-85047299309OAI: oai:DiVA.org:ri-33789DiVA, id: diva2:1203579
Prosjekter
Emerging Risks from Smoldering FiresTilgjengelig fra: 2018-05-03 Laget: 2018-05-03 Sist oppdatert: 2023-06-07bibliografisk kontrollert

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Fjellgaard Mikalsen, Ragni

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