New Correlation Between Ignition Time and Moisture Content for Pine Needles Attacked by Firebrands

Yin, Panpan; Liu, Naian; Chen, Haixiang; Lozano, Jesse S.; Shan, Yanlong

doi:10.1007/s10694-012-0272-y

Cited by 32 publications

(13 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Assuming ignition occurs when the temperature of the fuel beds reaches the ignition temperature T ig , Q ig may be described as follows: where q fuel is the bulk density of the fuel beds, c fuel is the specific heat capacity of fuel beds (wood), and T 0 is the ambient temperature, and V is volume. Q firebrand;comb is usually described as follows [26]:…”

Section: Resultsmentioning

confidence: 99%

“…1. Firebrands are pro-duced and lead to enhanced fire spread processes [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. Often referred to as spotting processes, firebrands are liberated from the combustion of various fuel types, such as trees, shrubs, houses, and then induce ignition of fuel sources away from the initial fire source.…”

Section: Introductionmentioning

confidence: 99%

“…In the case of short distance spot fires (distance up to 500 m to 750 m [28]), a potentially important aspect of the physics of ignition induced by firebrand are the coupled influence of firebrand showers and radiant heat. Many past investigations have focused on singular effects on fire spread [11,[23][24][25][26][27], and little is known about coupled effects.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigating Coupled Effect of Radiative Heat Flux and Firebrand Showers on Ignition of Fuel Beds

Suzuki

Manzello

2020

Fire Technol

View full text Add to dashboard Cite

Fire spread occurs via radiation, flame contact, and firebrands. While firebrand showers are known to be a cause of spot fires which ignite fuels far from the main fire front, in the case of short distance spot fires, radiation from the main fire may play a role for firebrand induced ignition processes. Many past investigations have focused on singular effects on fire spread, and little is known about coupled effects. The coupled effect of radiative heat flux and firebrand showers on ignition processes of fuel beds is studied by using a newly developed experimental protocol. The newly developed protocol includes the addition of a radiant panel to the existing experimental setup of a firebrand generator coupled to a wind facility. Experiments were performed under an applied wind field, as the wind is a key parameter in large outdoor fire spread processes. Results show that radiant heat flux plays an important role for ignition by firebrands under 6 m/s while little effect was observed under 8 m/ s.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigating Coupled Effect of Radiative Heat Flux and Firebrand Showers on Ignition of Fuel Beds

Suzuki

Manzello

2020

Fire Technol

View full text Add to dashboard Cite

show abstract

“…Typical temperature distribution in system «forest fuel-inclusion-particle» at 1 second of heated particle influence 01036-p. 4 The scenario of spring fire-dangerous season in the territory of Timiryazevskiy forestry enterprise of Tomsk region has been chosen for numerical modelling. For definiteness the environment parameters typical for May were used.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore now it is urgent to solve this problem even before its occurrence by means of ignition forecasting in forests [3]. Forest fuel layer ignition by various sources of local heating, such as particles heated up to high temperatures, is a major stage of forest fire occurrence [4,5]. In turn, heat transfer processes in the forest fuel layer determine many laws of its ignition at the influence of local heating source [3].…”

Section: Introductionmentioning

confidence: 99%

Mathematical Simulation of Heat Transfer in Heterogenous Forest Fuel Layer Influenced by Heated Up to High Temperatures Steel Particle

Baranovskiy

Naumkin

2014

MATEC Web of Conferences

View full text Add to dashboard Cite

Abstract. Heterogeneity of forest fuel layer renders the important influence on forest fire occurrence processes. One of sources of the raised temperature on forested territories is metal particles heated up to high temperatures. Such particles can be formed as a result of welding of metals on forested territories. The present paper represents the heat transfer research in forest fuel at the influence of metal particle heated up to high temperatures. The heterogonous forest fuel layer with inclusions of small wooden branches and chips is considered. Such object research is urgent especially at fire forecasting on forest cutting. The technology of mathematical simulation is used. The two-dimensional problem of heat transfer in forest fuel layer structure with wood inclusions is solved.

show abstract

Experimental study on the burning behaviour of Pinus halepensis needles using small‐scale fire calorimetry of live, aged and dead samples

Jervis

Rein

2015

Fire and Materials

View full text Add to dashboard Cite

SUMMARYLimited research has been conducted on the burning characteristics of live fuels, which are commonly assumed to behave like moist dead fuels. We use small-scale laboratory calorimetric experiments to investigate the differences in fire dynamics between live and dead Pinus halepensis needles. The study includes laboratory-aged samples and different moisture conditions (fresh or oven dry). A series of ten fire behaviour parameters are extracted from the measurements to identify and quantify differences. The main parameters are the following: time to ignition; flaming time; mass loss pre-ignition, during flaming, and during smouldering; peak power; effective heat of combustion; mean and peak CO/CO 2 ; and radiative fraction. Using these parameters, we show that the most flammable samples are fresh dead and aged needles, followed by dry dead and dry live needles. The least flammable is fresh live needles. Live needles ignite about four times slower, and burn with~60% lower power and~50% lower heat of combustion than dead needles. Aged needles resemble most closely the behaviour of dead needles, but many fire behaviour parameters were significantly different. The results confirm the importance of moisture content in the burning behaviour of pine needles, but the differences between live and dead samples cannot be explained solely in terms of moisture but require consideration of plant chemistry and sample drying.

show abstract

New Correlation Between Ignition Time and Moisture Content for Pine Needles Attacked by Firebrands

Cited by 32 publications

References 14 publications

Investigating Coupled Effect of Radiative Heat Flux and Firebrand Showers on Ignition of Fuel Beds

Investigating Coupled Effect of Radiative Heat Flux and Firebrand Showers on Ignition of Fuel Beds

Mathematical Simulation of Heat Transfer in Heterogenous Forest Fuel Layer Influenced by Heated Up to High Temperatures Steel Particle

Experimental study on the burning behaviour of Pinus halepensis needles using small‐scale fire calorimetry of live, aged and dead samples

Contact Info

Product

Resources

About