A5021274652- Fire effects on ecosystems
- Fire dynamics and safety research
- Plant Water Relations and Carbon Dynamics
- Remote Sensing and LiDAR Applications
- Landslides and related hazards
- Forest ecology and management
- Rangeland and Wildlife Management
- Combustion and flame dynamics
- Thermochemical Biomass Conversion Processes
- Forest Management and Policy
- Aeolian processes and effects
- Forest Ecology and Biodiversity Studies
- Fire Detection and Safety Systems
- Meteorological Phenomena and Simulations
- Turfgrass Adaptation and Management
- Fluid Dynamics and Turbulent Flows
- Chemical Thermodynamics and Molecular Structure
- Forest Biomass Utilization and Management
- Advanced Combustion Engine Technologies
- Culinary Culture and Tourism
- Spacecraft and Cryogenic Technologies
- Wind and Air Flow Studies
- Ecology and Conservation Studies
- Heat Transfer and Optimization
- thermodynamics and calorimetric analyses
National Institute of Standards and Technology
2022-2024
University of Edinburgh
2014-2023
University of Tennessee at Knoxville
2005
Large eddy simulation (LES) based computational fluid dynamics (CFD) simulators have obtained increasing attention in the wildland fire research community, as these tools allow inclusion of important driving physics. However, due to complexity models, individual aspects must be isolated and tested rigorously ensure meaningful results. As wind is a force that can significantly dictate behavior wildfire, studied context particular LES CFD model, Wildland–urban interface Fire Dynamics Simulator...
Prescribed fires are conducted extensively in pine-dominated forests throughout the Eastern USA to reduce risk of wildfires and maintain fire-adapted ecosystems. We asked how fire behavior fuel consumption during prescribed associated with turbulence energy fluxes, which affect dispersion smoke transport firebrands, potentially impacting local communities transportation corridors. estimated measured above-canopy fluxes using eddy covariance eight ranging from low-intensity backing...
Background Further understanding of the effect fuel structure on underlying physical phenomena controlling flame spread is required given lack a coherent porous theory.Aims To systematically investigate heat transfer mechanisms within and above beds.Methods Radiant total fluxes were measured in two extended series laboratory-based quiescent experiments pine needle beds across range structural conditions (various loadings, bulk densities, depths).Key results Peak radiant from in-bed...
Prescribed burning is a cost-effective method for reducing hazardous fuels in pine- and oak-dominated forests, but smoke emissions contribute to atmospheric pollutant loads, the potential exists exceeding federal air quality standards designed protect human health. Fire behavior during prescribed burns influences above-canopy sensible heat flux turbulent kinetic energy (TKE) buoyant plumes, affecting lofting dispersion of smoke. A more comprehensive understanding how enhanced fluxes...
The hazards associated with firebrands have been well documented. However, there exist few studies that allow for the hazard from a given fire to be quantified. To develop predictive tools evaluate this hazard, it is necessary understand conditions govern firebrand generation and those affect deposition. A method presented allows time-resolved measurements of behavior related dynamics Firebrand were recorded in three fires undertaken two different ecosystems. Fire intensity shown drive...
An experimental fire was conducted in 2016, the Pinelands National Reserve of New Jersey, to assess reliability pattern indicators used wildland investigation. Objects were planted burn area support creation indicators. Fuel properties and environmental data recorded. Video infrared cameras document general behavior. This work represents first step analysis by developing an protocol suitable for field studies describing how different appeared relation Most micro- macroscale assessed. The...
Abstract Modeling flow in vegetative fuel beds is a key component any detailed physics-based tool for simulating wildland fire dynamics. Current approaches drag modeling, particularly those employed multiphase computational fluid dynamics (CFD) models, tend to take relatively simple form and have been applied wide range of structures. The suitability these has not rigorously tested conditions which may be encountered context. Here, we focus on Pinus rigida needle litter undertake two-part...
Abstract A new instrument to quantify firebrand dynamics during fires with particular focus on those associated the Wildland-Urban Interface (WUI) has been developed. During WUI fires, firebrands can ignite spot which rapidly increase rate of spread (ROS) fire, provide a mechanism by fire pass over firebreaks and are leading cause structure ignitions. Despite this key role in driving wildfire hazards, difficulties collecting field preserving their physical condition (e.g. dimensions...