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Fire

Fire dynamics & science

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Displaying 51 - 70 of 70

The Thermal Character of a 1 m Methanol Pool Fire

February 27, 2020
Author(s)
Kunhyuk Sung, Jian Chen, Matthew Bundy, Marco G. Fernandez, Anthony Hamins
A series of measurements were made to investigate the thermal character of a 1 m diameter methyl alcohol (methanol; CH3OH) pool fire steadily burning with a constant lip height in a quiescent environment. The mass burning rate was measured by monitoring

The Structure of Medium-Scale Pool Fires

February 19, 2020
Author(s)
Ryan L. Falkenstein-Smith, Kunhyuk Sung, Jian Chen, Kimberly J. Harris, Anthony P. Hamins
This report documents a series of time-averaged gas species measurements made along the centerline of methanol, ethanol, and acetone pool fires steadily burning in a quiescent environment. All gas species measurements are obtained using a Gas Chromatograph

Assessing the Predictive Capability for Real-Scale Residential Upholstered Furniture Mock-Up Fires using Cone Calorimeter Measurements. Part 1: Real-Scale Experiments

February 10, 2020
Author(s)
William M. Pitts, Martin Werrel, Marco G. Fernandez, Mary A. Long, Evan A. Eisenberg, James J. Filliben, Cory D. Runyon
This is the first of three reports describing a study designed to assess the feasibility of utilizing small-scale measurements in a cone calorimeter as inputs for predicting the burning behavior of real-scale residential upholstered furniture (RUF). Here

The NIST 20 MW Calorimetry Measurement System for Large-Fire Research

December 26, 2019
Author(s)
Rodney A. Bryant, Matthew F. Bundy
The National Fire Research Laboratory is a unique large-fire research facility; able to characterize the response of full-scale building systems to realistic mechanical loading and fire. The facility maintains an infrastructure of measurements necessary

Measurements and Predictions of Thermophoretic Soot Deposition

November 1, 2019
Author(s)
Amy E. Mensch, Thomas G. Cleary
A thin laminar flow channel with a transverse temperature gradient was used to examine thermophoretic deposition of soot aerosol particles in experiments and modeled in Fire Dynamics Simulator (FDS) simulations. Conditions investigated included three

Thin Filament Pyrometry Field Measurements in a Medium-Scale Pool Fire.

September 13, 2019
Author(s)
Zhigang Wang, Andy Tam, Jian Chen, Ki Y. Lee, Anthony Hamins
This paper presents the development of a thin filament pyrometry method to characterize the time- varying temperature field in a medium-scale pool fire in a quiescent environment. A digital camera with optical filters and zoom lens was used to record the

Energy Balance in Medium-Scale Methanol, Ethanol, and Acetone Pool Fires

July 1, 2019
Author(s)
Sung C. Kim, Ki Y. Lee, Anthony Hamins
Several series of measurements were made to characterize medium-scale pool fires steadily burning in a well-ventilated, quiescent, open environment. Time-averaged local measurements of radiative and total heat flux were made in steadily burning methyl

R-152a/air and R-134a/oxygen constant volume spherical flame burning velocity measurements

March 25, 2019
Author(s)
Robert R. Burrell, Gregory T. Linteris, Donald R. Burgess Jr., Michael J. Hegetschweiler, Jeffrey A. Manion, Valeri I. Babushok
Many presently used refrigerants are non-flammable but are being phased out due to concerns about their strong global warming potential (GWP). Replacements with low GWP exist but tend to be flammable with a maximum burning velocity in air between 1 cm/s

Improving Measurement for Smokestack Emissions - Workshop Summary

September 21, 2018
Author(s)
Rodney A. Bryant, Aaron N. Johnson, John D. Wright, Tamae M. Wong, James R. Whetstone, Michael R. Moldover, Iosif I. Shinder, Scott Swiggard, Chris Gunning, David Elam, Tom Martz, Eric Harman, David Nuckols, Liang Zhang, Woong Kang, Salvator Vigil
The complex flow conditions inherent in power plant smokestacks make accurate flow measurements challenging, which in turn limits the accuracy of hazardous emissions measurements. While stack composition measurements are assessed daily via comparison to a

The Influence of Walls, Corners and Enclosures on Fire Plumes

March 19, 2018
Author(s)
Kevin B. McGrattan, Michael J. Selepak, Edward J. Hnetkovsky
This report documents two series of compartment fire experiments in which a natural gas burner is positioned in a corner, or against a wall, or inside a steel cabinet, to assess the effects on the plume and compartment temperatures. The measurements

A Soot Deposition Gauge for Fire Measurements

March 12, 2018
Author(s)
Amy E. Mensch, Thomas G. Cleary
The goal of this exploratory project is to demonstrate the feasibility of a conductometric measurement to determine the time-resolved soot deposition on surfaces in fire environments. Quantitative soot deposition data enabled by this measurement method is

Quantifying Thermophoretic Deposition of Soot on Surfaces

October 2, 2017
Author(s)
Amy E. Mensch, Thomas G. Cleary
Quantitative data on deposition of soot agglomerate particles in the literature is needed to advance fire forensic analysis as well as fire model predictions of visibility and detector activation. This paper provides direct measurements of thermophoretic
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