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Displaying 26 - 50 of 154

The MaCFP Condensed Phase Working Group: A Structured, Global Effort Towards Pyrolysis Model Development

November 23, 2021
Author(s)
Isaac Leventon, Benjamin Batiot, Morgan Bruns, Simo Hostikka, Yuji Nakamura, Pedro Reszka, Thomas Rogaume, Stanislav Stoliarov
The International Association for Fire Safety Science (IAFSS) Working Group on Measurement and Computation of Fire Phenomena (i.e., the MaCFP Working Group) has been established as a global collaborative effort between experimentalists and modelers in the

Validation of Aerosol Dynamics in a Well-Stirred Isothermal Enclosure

September 30, 2021
Author(s)
Amy Mensch, Thomas Cleary
Modeling of aerosol dynamics in fire simulations enables predictions of the effects of soot, such as visibility and detection, and the fate of soot, such as deposition and emissions. NIST's fire modeling tool, Fire Dynamics Simulator (FDS), has implemented

Mixture Fraction Analysis of Combustion Products in Medium-Scale Pool Fires

November 13, 2020
Author(s)
Ryan Falkenstein-Smith, Kunhyuk Sung, Jian Chen, Anthony Hamins
A mixture fraction analysis is performed to investigate the characteristics of time-averaged gaseous species measurements made along the centerline of medium-scale pool fires steadily burning in a quiescent environment. A series of fire experiments are

Estimation of the critical external heat leading to the failure of lithium-ion batteries

June 29, 2020
Author(s)
Wei Tang, Andy Tam, Liming Yuan, Thomas Dubaniewicz, Richard Thomas, John Soles
A detailed experimental investigation on the critical external heat leading to the failure of lithium-ion (Li-ion) batteries was conducted using an Accelerating Rate Calorimeter (ARC) at the National Institute for Occupational Safety and Health (NIOSH)

Effect of Pressure on the Heat Transfer of Pool Fire in a Closed Chamber

June 15, 2020
Author(s)
Jian Chen, Yubo Bi, Yanli Zhao, Andy Tam, Changhai Li, Shouxiang Lu
A combined analytical and experimental study was performed to determine the effect of pressure on the heat transfer of pool fire in a closed chamber. A series of ethanol pool fires with diameters from 4 cm to 10 cm were carried out in the pressure chamber

Mid-Infrared Dual Frequency Comb Spectroscopy for Combustion Analysisin the 2.8 to 5 micron Spectral Region

June 7, 2020
Author(s)
Ian Coddington, Nathan R. Newbury, Greg Rieker, Amanda S. Makowiecki, Daniel Herman, Nazanin Hoghooghi, Elizabeth F. Strong, Gabriel Ycas, Fabrizio Giorgetta, Ryan Cole, Caelan Lapointe, Jeff Glusman, John Daily, Peter E. Hamlington
We demonstrate the application of mode-locked mid-infrared dual frequency comb spectroscopy for combustion analysis. With two settings of the same dual-comb system, the measurement spans 1500 cm-1 (2.8 to 5 microns) with 0.0067 cm-1 (200 MHz) point spacing

Direct Lagrangian Forcing Methods Based on Moving Least Squares

May 15, 2020
Author(s)
Marcos Vanella, Elias Balaras
The application of computational fluid dynamics to complex engineering flow problems necessitates the adoption of numerical algorithms that are accurate, robust and efficient at the same time. These are usually conflicting requirements and there is still

The Chemical Structure of a 30 cm Methanol Pool Fire

April 25, 2020
Author(s)
Ryan Falkenstein-Smith, Kunhyuk Sung, Jian Chen, Anthony Hamins
This study documents a series of time-averaged gas species measurements made along the centerline of a 30 cm methanol pool fires steadily burning in a quiescent environment. All gas species measurements are obtained using a Gas Chromatograph/ Mass

On the Cooling of a 360o Video Camera to Observe Fire Dynamics In Situ

December 11, 2019
Author(s)
Jiann C. Yang
An analysis was performed to provide design guidance on the cooling of an NIST-developed in situ fire visualization device, called Burn Observation Bubble (BOB). The analysis was to address the question of how long the device can be operated in a fire

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

Assessment of Radiation Solver of Fire Simulation Models Using RADNNET-ZM

September 13, 2019
Author(s)
Wai Cheong Tam, Walter W. Yuen
The paper presents a neural-network based zonal method (RADNNET-ZM) for the analysis of radiative heat transfer in an arbitrary Cartesian enclosure with an isothermal, inhomogeneous, non-gray medium. The model accounts for the non-gray effect of absorbing
Displaying 26 - 50 of 154