Title:

Multi-scale analyses of wildland fire combustion processes: Small-scale field experiments – temperature profile

Author(s):

Clark, Kenneth L.; Gallagher, Michael R.; Mueller, Eric V.; Hadden, Rory M.; Walker-Ravena, Carlos; Campbell-Lochrie, Zakary J.; Cole, Jason A.; Patterson, Matthew M.; Everland, Alexis I.; Skowronski, Nicholas S.

Publication Year:

2022

How to Cite:

These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the citation below when citing the data product:

Clark, Kenneth L.; Gallagher, Michael R.; Mueller, Eric V.; Hadden, Rory M.; Walker-Ravena, Carlos; Campbell-Lochrie, Zakary J.; Cole, Jason A.; Patterson, Matthew M.; Everland, Alexis I.; Skowronski, Nicholas S. 2022. Multi-scale analyses of wildland fire combustion processes: Small-scale field experiments – temperature profile. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2022-0083

Abstract:

The United States Department of Defense (DoD) Strategic Environmental Research and Development Program (SERDP) funded project: "Multi-scale Analyses of Wildland Fire Combustion Processes in Open-canopied Forests using Coupled and Iteratively Informed Laboratory-, Field-, and Model-based Approaches (RC-2641)" small-scale field experiments were designed to investigate how contrasting fuel conditions (e.g., fuel load, particle type, bulk density), fire spread type (e.g., heading vs. backing), and ambient conditions (e.g., seasonality, moisture, flow, temperature) influenced physical processes associated with combustion (e.g., heat transfer, flame propagation, flow) and the scale-dependent coupling of these processes. Additionally, these experiments provide 1) a linkage between small-scale laboratory combustion experiments and large-scale operational prescribed fires, and 2) archived datasets for further model development and evaluation. Our experimental design incorporates complementary approaches, methods, and instrumentation employed at these other scales, to quantify critical properties of the experimental fires’ physics domains (e.g., fuels and ambient conditions) and processes associated with combustion (e.g., heat transfer, flame propagation, flow). The small-scale field experiments include a series of highly instrumented, intermediate-scale experiments conducted on 100 square meter plots at the Silas Little Experimental Forest, New Lisbon, New Jersey.

This dataset contains data collected from thermocouples during thirty-four burns in 2018 and 2019. The thermocouples were deployed as 8 to 14 vertical arrays on trusses B and C, with each array consisting of seven K-type thermocouples (KMTXL-IOM25G-150, Omega Engineering Inc., Norwalk, CT) mounted in a vertical profile at 0, 5, 10, 20, 30, 50 and 100 centimeter (cm) heights above fuel beds. For experiments 1-6 conducted in March 2018, four thermocouple arrays mounted on the two center trusses were used, and these were mounted adjacent to each sonic anemometer, for a total of 8 arrays. For experiments 7-36 conducted in May and September 2018 and May 2019, three additional thermocouple arrays were added to each truss, which halved the distance between arrays to 1.5 meters (m), for a total of 14 arrays. Thermocouples were logged at 10 hertz (Hz) using CR3000 dataloggers, and data were used to estimate arrival times, persistence, and height and tilt of flame fronts.

Keywords:

fire behavior; fire spread; combustion; computational fluid dynamics; aerodynamic drag ; fire behavior; fire spread; combustion; computational fluid dynamics; aerodynamic drag ; fuel structure and loading; heat fluxes; prescribed burn; prescribed fir; temperature; biota; climatologyMeteorologyAtmosphere; environment; Fire; Fire suppression, pre-suppression; Prescribed fire; Smoke; Wildland/urban interface; Silas Little Experimental Forest; New Jersey; Burlington County; Pinelands National Reserve; PNR; Pine Barrens; NJPB; Pine Lands

Related publications:

• Gallagher, Michael R.; Skowronski, Nicholas S.; Hadden, Rory M.; Mueller, Eric V.; Clark, Kenneth L.; Campbell-Lochrie, Zakary J.; Walker-Ravena, Carlos, ; Kremens, Robert L.; Everland, Alexis I.; Patterson, Matthew M.; Cole, Jason A.; Heilman, Warren E.; Charney, Joseph J.; Bian, Xindi, ; Mell, William E.; Hom, John L.; Im, Seong-kyun; Kiefer, Michael T.; Zhong, Shiyuan, ; Simeoni, Albert J.; Rangwala, Ali; Di Cristina, Giovanni. 2022. Multi-scale analyses of wildland fire combustion processes: Small-scale field experiments - plot layout and documentation. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2022-0079

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