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Search Publications

NIST Authors in Bold

Displaying 2901 - 2925 of 3892

Molecular Level Design of Fire Retardants and Suppressants (NISTIR 6275)

January 1, 1999
Author(s)
Marc R. Nyden
The various methods that comprise the field of molecular modeling are reviewed in the context of their potential for application to the molecular level design of new fire retardants and suppressants. The capabilities of these techniques are demonstrated by

Performance and Modeling of Heat Flux Sensors in Different Environments

January 1, 1999
Author(s)
David G. Holmberg, C A. Womeldorf
Heat flux measurement is not simple; care is required in selecting a suitable sensor for a given application. Surface substrate properties and the convective and radiative environment determine the choice of sensors. Mounting of the sensor, especially in

Quantifying Fire Model Evaluation Using Functional Analysis

January 1, 1999
Author(s)
Richard D. Peacock, Paul A. Reneke, William D. Davis, Walter W. Jones
Comparisons of predictive fire models with each other or with experimental data have been largely qualitative. By treating these time series curves as infinite-dimensional vectors, a branch of mathematics called functional analysis defines geometrically

Real-Time Measurements of Condensed-Phase Spectra in Burning Polymers

January 1, 1999
Author(s)
Marc R. Nyden
A major goal of the Building and Fire Research Laboratory is to provide the polymer industry with the technical understanding and measurement tools that are needed to develop a new generation of fire resistant materials. In the pursuit of this goal, we

Upward Flame Spread on Composite Materials

January 1, 1999
Author(s)
Thomas J. Ohlemiller, Thomas G. Cleary
Three existing models of upward flame spread were tested against intermediate-scale experiments on a vinyl-ester/glass composite. Characterization of rate of heat release per unit area, needed as input to the models, was obtained at external radiant fluxes

Report on the First-Generation NIST Convective Heat Flux Calibration Facility

December 10, 1998
Author(s)
David G. Holmberg, C A. Womeldorf
The National Institute of Standards and Technology has developed a convective heat flux calbration facility to allow evaluation of heat flux sensors. This facility is a small wind tunnel that produces a two-dimensionl laminar boundary layer across a heated

Chemical Limits to Flame Inhibition

December 1, 1998
Author(s)
Valeri I. Babushok, Wing Tsang, Gregory T. Linteris, D Reinelt
This paper deals with the ultimate limits of chemical contributions to flame inhibition. Particular attention is focussed on the inhibition cycles which regenerate the inhibitor. This leads to the definition of an idealized "perfect" inhibition cycle. It

Modified Slump Test to Measure Rheological Parameters of Fresh Concrete

December 1, 1998
Author(s)
Chiara F. Ferraris, F DeLarrard
The ease of placement of concrete depends upon at least two physical properties, the yield stress and plastic viscosity. Currently the most common field test is the slump test, and it is related only to the yield stress. Therefore, a simple field test

Thermal Lattice Boltzmann Models (TLBM) for Compressible Flows

December 1, 1998
Author(s)
G Vahala, P Pavlo, L Vahala, Nicos Martys
The progress and challenges in thermal lattice Boltzmann modeling are discussed. In particular, momentum and energy closures schemes are contrasted. Higher order symmetric (but no longer space filling) velocity lattices are constructed for both 2D and 3D

Sensitivity Examination of the airEXODUS Aircraft Evacuation Simulation Model

November 16, 1998
Author(s)
Richard W. Bukowski, Richard D. Peacock, Walter W. Jones
The Building and Fire Research Laboratory at the National Institute of Standards and Technology (NIST) has been a leader in the development, application and evaluation of models for the simulation of fires and the associated hazards and risk to people

Evaluation of the External Force Term in the Discrete Boltzmann Equation

November 1, 1998
Author(s)
Nicos Martys, X Shan, H Chen
A representation of the forcing term in the Boltzmann equation based on Hermite expansion of the Boltzmann distribution function in velocity phase space is derived. Based on this description of the forcing term, a systematic comparison of previous Lattice

Performance of a Commerical Hot Water Boiler

November 1, 1998
Author(s)
Cheol D. Park, S T. Liu
In responding to ASHRAE SPC 155P's interest and to provide additional evidence on the envisioned linear relationship between output and input of a boiler under part load conditions, the National Institute of Standards and Technology undertook to conduct a

Fire-Emulator Detector-Evaluation

October 28, 1998
Author(s)
Artur A. Chernovsky, William L. Grosshandler, Thomas G. Cleary, Michael D. Anderson
The performance of a fire detection system is determined as much by its ability to recognize correctly the non-fire state as to sense the presence of a real fire. Common fire detectors respond to particulate matter in the form of smoke from a flaming or

Analytical Study of Residential Buildings With Reflective Roofs

October 1, 1998
Author(s)
Robert R. Zarr
Annual heating (cooling) loads, peak heating (cooling) loads, and exterior roof temperatures for a small compact ranch house are computed using the Thermal Analysis Research Program (TARP) developed at the National Institute of Standards and Technology

Building for Environmental and Economic Sustainability (BEES)

October 1, 1998
Author(s)
Barbara C. Lippiatt
Buildings significantly alter the environment. According to Worldwatch Institute (1), building construction consumes 40 percent of the raw stone, gravel, and sand used globally, and sand used globally each year, and 25 percent of the virgin wood. Buildings
Displaying 2901 - 2925 of 3892
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