期刊
INTERNATIONAL JOURNAL OF WILDLAND FIRE
卷 21, 期 3, 页码 270-281出版社
CSIRO PUBLISHING
DOI: 10.1071/WF10127
关键词
bushfire; Eucalyptus marginata; fire behaviour; flame measurement; fuel age; jarrah forest; Vesta
类别
资金
- Department of Conservation and Land Management
- CSIRO Forestry and Forest Products
- Australasian Fire Authorities Council
- Hermon Slade Foundation
- Forest and Wood Products Research and Development Corporation
- Insurance Council of Australia
- Isuzu Trucks
Temperature profiles of flames were measured using arrays of thermocouples on towers located in experimental bushfires of varying intensity, carried out in dry eucalypt forest of different fuel age and structure. In-fire video of flame-front passage and time series data from very fine exposed thermocouples were used to estimate the duration of passage of the main flaming front in these experimental fires. Flame temperature measured at points within the flame was found to vary with height; maximum flame temperature was greater in the tall shrub fuel than in the low shrub fuel sites. A model to estimate flame temperature at any height within a flame of a specific height was developed. The maximum flame temperature observed was similar to 1100 degrees C near the flame base and, when observation height was normalised by flame height, flame temperature exponentially decreased to the visible flame tip where temperatures were similar to 300 degrees C. Maximum flame temperature was significantly correlated with rate of spread, fire intensity, flame height and surface fuel bulk density. Average flame-front residence time for eucalypt forest fuels was 37 s and did not vary significantly with fine fuel moisture, fuel quantity or bulk density.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据