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The purpose of this chapter is to set out the principles of chemical kinetics as they apply to combustion in flames and fires. Chemical equilibrium, which was discussed in a previous chapter, deals with the final preferred state of a given set of reactants
Kathryn Butler, Erik Johnsson, Marco Fernandez, Shonali Nazare, Alexander Maranghides
Field observations show that combustible landscaping features are a common pathway leading fire spread directly to homes during wildland-urban interface (WUI) fires. NIST is studying how these features near a home burn to better understand their levels of
Michael Link, Nathan Lima, Aika Davis, Ryan Falkenstein-Smith, Rodney Bryant, Thomas Cleary, Dustin Poppendieck
At the wildland-urban interface (WUI) structural fires can generate non-methane organic gases (NMOGs) from burning urban fuels like structural lumber, plastics, and carpet. These NMOGs can contaminate nearby homes and affect indoor air quality. NMOGs have
Alec Tripi, Ryan Greene, Isaac Leventon, Kevin McGrattan
Predictions of fire phenomena such as flame structure, stability, and growth made by computational fire models can be improved by incorporating an accurate description of the gaseous volatiles released by combustible solids during pyrolysis. The difficulty
T The combustion of vegetative fuels or biomass has important applications in energy generation, wildfire spread, and structural fire safety. It is critical to be able to accurately quantify the energy content of these fuels (i.e., their respective heats
This study examines variations in fire behavior among over 20 commercially available poly(methyl methacrylate) (PMMA) samples from different suppliers. Previous studies, have demonstrated the importance of kinetic parameters — describing thermal
Christopher Brown, Alexander Maranghides, Giovanni Di Cristina Torres, Diana Bailey, Lucy Fox, Eric Link, Selvarajah Ramesh, Monica Flores, Shonali Nazare, J. Houston Miller, Erin McCaughey
This report documents a series of full-scale fire experiments conducted at the National Institute of Standards and Technology (NIST) to characterize the performance of select wildland-urban interface (WUI) eave vents exposed to fire from noncombustible
Christopher Sampl, Clinton Smith, Albert Bahri, David Little, Richard Reel, Ash Liu, Jonathan Hodges, Ryan Falkenstein-Smith
Artificial Intelligence (AI) is becoming more pervasive in society, including public safety. There is a growing need for safety guidelines as AI becomes more integrated within electronic safety products used within the fire service. A group comprised of
Erik Johnsson, Giovanni Di Cristina Torres, Eric Mueller, Matthew Bundy, Anthony Chakalis, Marco Fernandez, Anthony Hamins
A series of experiments are reported on the burning behavior of dry, 3 m to 6 m tall, Douglas fir trees. The measurements were conducted in the open under quasi-quiescent conditions. The global measurements reported include the transient, peak, and total
Erik Johnsson, Kathryn Butler, Marco Fernandez, Wei Tang, Shonali Nazare, Philip Deardorff, Sebastian Arana, Alexander Maranghides
NIST is studying how combustible landscape features around a home burn to better understand their levels of hazard and potential roles in spreading wildland-urban interface (WUI) fires. A series of field experiments was conducted to examine the effects of
Kunhyuk Sung, Eric Mueller, Matthew Bundy, Marco Fernandez, Anthony Hamins
A series of experiments were conducted to better understand the burning characteristics of three types of vegetative fuels: Little Bluestem grass, Douglas fir trees, and Excelsior. The measurements included the transient heat release rate (HRR) determined
Anthony Hamins, Giovanni Di Cristina Torres, Matthew Bundy, Anthony Chakalis, Marco Fernandez, Ickchan Kim, Selvarajah Ramesh, Mauro Zammarano
A series of experiments are reported on the burning behavior of single items and assemblies commonly found in offices and residences, including chairs, sofas, mattresses with pillows and bedclothes, and some miscellaneous items such as laptops, bookshelves
Gregory Linteris, Michael Hegetschweiler, Valeri Babushok
Possible replacements for the refrigerant R-134a have been proposed in previous work based on their flammability behavior in standard tests of the Heating, Ventilation, Air-Conditioning, and Refrigeration industry. The present work extends that behavior to
Aika Davis, Thomas Cleary, Ryan Falkenstein-Smith, Rodney Bryant
Experiments were conducted to study the burning characteristics and smoke emission from mixed fuel crib assemblies designed to represent the main components in structures. Cribs consisting of wood lumber, oriented strand board, gypsum wallboard
Andrew Maizel, Andre Thompson, Benjamin Place, Alix Rodowa, Jessica Reiner, Audrey Tombaugh, Halen Solomon, Brittany Stinger, Michelle Donnelly, Rick Davis
Firefighter turnout gear provides protection from exposure to flame, heat, and liquids, but has also been found to contain numerous per- and polyfluoroalkyl substances (PFAS). Previous examinations of PFAS in firefighter turnout gear have predominantly
Ryan Greene, Alec Tripi, Isaac Leventon, Kevin McGrattan
In order to predict fire phenomena such as flame structure, stability, and growth, computational fire models require an accurate description of the gaseous volatiles released by combustible solids during pyrolysis. The difficulty in this characterization
Combustion of biomass and woody fuels is relevant to energy generation, wildfire spread, and structural fire safety. It is critical to be able to accurately quantify the energy content of these fuels (i.e., their heats of combustion [kJ/g]) and where this
Impacts of wildland-urban interface (WUI) fires continue to rise in the U.S., as evidenced by the string of devastating and record-breaking events occurring since 2017. As seen in several events in recent years, WUI fires can impact communities quickly
This document serves as the documentation for the Fire Data Generator (FD-Gen), an automated tool designed to streamline the creation of multiple Fire Dynamics Simulator (FDS) input files. By employing Monte Carlo methods to sample relevant fire parameters
Accurate flow measurements at the exhaust systems of large fire test facilities are critical for achieving accurate measurements of heat release rate. A detailed characterization of exhaust flow for the National Fire Research Laboratory (NFRL) has been
This paper presents gFlashNet, a generic flashover prediction model, designed to address the limitations of existing models that are restricted to specific residential building layouts. The aim of this research is to improve the scalability and
A set of approximate first-order ordinary differential equations was derived from the general dynamic equation (GDE) to study the aerosol dynamics with homogeneous nucleation and condensational diffusion-limited growth in an isothermal batch reactor. A
This report documents a series of fire experiments performed within steel electrical enclosures and on open "ladder back" cable trays. The first objective is to measure the heat release rates and qualitatively understand the burning behavior of circuit