Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Effects of Fuel Bed Slope and Wind Direction on Flame Spread Characteristics Over a Bed of Pinus Silvestris Needles. / Selvaraj, Muthu Kumaran; Vasudevan, Raghavan; Korobeinichev, Oleg и др.
в: Combustion Science and Technology, 2024.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Effects of Fuel Bed Slope and Wind Direction on Flame Spread Characteristics Over a Bed of Pinus Silvestris Needles
AU - Selvaraj, Muthu Kumaran
AU - Vasudevan, Raghavan
AU - Korobeinichev, Oleg
AU - Trubachev, Stanislav
AU - Paletsky, Alexander
AU - Sagitov, Albert
AU - Chernov, Anatoliy
AU - Shmakov, Andrey
PY - 2024
Y1 - 2024
N2 - Important factors influencing the flame characteristics over a bed of dry pine needles from Siberian Boreal forests (Pinus silvestris) in lab-scale is provided. Factors such as slope of the fuel bed, wind velocity, and direction of spread (concurrent flow or opposed flow), which play significant roles in determining the flame spread rate, have been investigated. Systematic lab-scale experiments have been carried out in a wind tunnel with varying air velocities and on an inclined fuel bed in still air. Numerical simulations have been carried out using a three-dimensional physics-based flame spread model available in Fire Dynamics Simulator, and the results are validated against a wide range of measured flame characteristics. The validated numerical model is then used to simulate concurrent flow and opposed flow flame spread over a sloping fuel bed in the presence of wind. Gas phase temperature on and above the bed surface and total and radiative heat flux measurements for concurrent flow and opposed flow flame spread under the influence of wind as well as for upslope flame spread in still air are presented. A stationary flame propagation mode is observed for a flat fuel surface. Predicted temperature, flow, and species concentration fields have been reported for selected cases to understand the flow and flame dynamics in gas phase and within the fuel beds. These data serve as a validation of the numerical model used for simulating the experimental cases. Further, it can be used to validate popular fire models such as Fire Foam and Fire-Star 3D.
AB - Important factors influencing the flame characteristics over a bed of dry pine needles from Siberian Boreal forests (Pinus silvestris) in lab-scale is provided. Factors such as slope of the fuel bed, wind velocity, and direction of spread (concurrent flow or opposed flow), which play significant roles in determining the flame spread rate, have been investigated. Systematic lab-scale experiments have been carried out in a wind tunnel with varying air velocities and on an inclined fuel bed in still air. Numerical simulations have been carried out using a three-dimensional physics-based flame spread model available in Fire Dynamics Simulator, and the results are validated against a wide range of measured flame characteristics. The validated numerical model is then used to simulate concurrent flow and opposed flow flame spread over a sloping fuel bed in the presence of wind. Gas phase temperature on and above the bed surface and total and radiative heat flux measurements for concurrent flow and opposed flow flame spread under the influence of wind as well as for upslope flame spread in still air are presented. A stationary flame propagation mode is observed for a flat fuel surface. Predicted temperature, flow, and species concentration fields have been reported for selected cases to understand the flow and flame dynamics in gas phase and within the fuel beds. These data serve as a validation of the numerical model used for simulating the experimental cases. Further, it can be used to validate popular fire models such as Fire Foam and Fire-Star 3D.
KW - Fire spread
KW - fire dynamics simulator
KW - opposed flow
KW - pinus silvestris
KW - slope
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85201947748&origin=inward&txGid=d32209c5207057a29147d04912c24300
UR - https://www.mendeley.com/catalogue/dc58341e-027a-3ee7-bef8-619d2110c2f6/
U2 - 10.1080/00102202.2024.2393658
DO - 10.1080/00102202.2024.2393658
M3 - Article
JO - Combustion Science and Technology
JF - Combustion Science and Technology
SN - 0010-2202
ER -
ID: 60535269