| Title: |
Wind behaviour in junction fires |
| Authors: |
Alonso-Pinar, Alberto; Paugam, Ronan; Voermans, Joey; Babanin, Alexander; Uljanic, Dom; Filippi, Jean Baptiste; Filkov, Alexander |
| Contributors: |
Università di Corsica Pasquale Paoli Université de Corse Pascal Paoli; University of Melbourne; Universitat Politècnica de Catalunya = Université polytechnique de Catalogne Barcelona (UPC); Department of Environment, Land, Water and Planning (DEECA); ARC Discovery Project (DP210102540); Australasian Fluid Mechanics Society |
| Source: |
Australasian Fluid Mechanics Conference ; https://hal.science/hal-05234990 ; Australasian Fluid Mechanics Conference, Australasian Fluid Mechanics Society, Dec 2024, Canberra, Australia. ⟨10.5281/zenodo.14213439⟩ |
| Publisher Information: |
CCSD |
| Publication Year: |
2024 |
| Collection: |
Università di Corsica Pasquale Paoli: HAL |
| Subject Terms: |
field experiment; fire dynamics; extreme fire behaviour; turbulence; wind measurement; Junction fire dynamics; [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]; [SDE]Environmental Sciences; [SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture; forestry |
| Subject Geographic: |
Canberra; Australia |
| Description: |
International audience ; Extreme fire behavior has a great impact on communities and the environment, posing a significant threat to public safety and causing billions of dollars in damage. Their frequency has increased globally in recent years and is expected to keep increasing due to climate change. One type of these extreme behaviors is known as junction fires. Junction fires involve the merging of two fire fronts and have the potential to exhibit a rapid increase in rate of spread and fire intensity over a short period of time.While there are several studies simulating this phenomenon in a variety of scales there is a lack of experimental results to verify the models and further understand the interactions between local weather, fuel and fire. This study presents experimental results obtained during a prescribed fire in Little desert, Victoria.The prescribed burning was conducted by DEECA on April the 26th 2024. 5 plots were burned with two merging fire lines each. The plots had an average dimension of 50m in length and 50m in width. The terrain was locally flat and covered with shrubs up to around 1m in height.This research presents local point measurements of the fire dynamics in the field scale. Different types of instrumentation were used: 4 anemometers, 8 fire packages and an automatic weather station. The fire packages are custom built devices used to measure 3D wind components, temperature and heat flux at a 1Hz frequency. The fire packages were placed within the burning plot with the objective of measuring different spatial components of the fire behavior. To account for vertical variations in temperature and fire wind, the fire packages were placed at two different heights: 20cm and 1.5m above the ground. This allowed to measure flame temperature at two heights and to account for intermittent flaming. The 4 anemometers were placed in the corners of the square delimiting the burning plot to capture inflow and outflows related to the fire. This configuration allowed to measure 2D winds and ... |
| Document Type: |
conference object |
| Language: |
English |
| DOI: |
10.5281/zenodo.14213439 |
| Availability: |
https://hal.science/hal-05234990; https://hal.science/hal-05234990v1/document; https://hal.science/hal-05234990v1/file/AFMC2024_listed_paper_65.pdf; https://doi.org/10.5281/zenodo.14213439 |
| Rights: |
http://creativecommons.org/licenses/by-nc-nd/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.62FB7182 |
| Database: |
BASE |