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Displaying 42676 - 42700 of 73960

Calculation of Obstructed View Factors by Adaptive Integration

November 1, 2002
Author(s)
George Walton
This report describes the use of adaptive integration for the calculation of view factors between simple convex polygons with obstructions. The accuracy of the view factor calculation is controlled by a convergence factor. The adaptive integration method

CONTAMW 2.0 User Manual

November 1, 2002
Author(s)
William S. Dols, George Walton
This manual describes the computer program CONTAMW version 2.0 developed by NIST. CONTAMW is a multizone indoor air quality and ventilation analysis program designed to help you determine: airflows and pressures infiltration, exfiltration, and room-to-room

Database for Computational Thermodynamics and Diffusion Modeling Workshop Report

November 1, 2002
Author(s)
Ursula R. Kattner, William J. Boettinger, J E. Morral
Databases for computational thermodynamics and diffusion modeling can be applied to predict phase diagrams for alloy design and alloy behavior during processing and service. Databases that are currently available to scientists, engineers and students need

Database-Assisted Design and Wind Directionality Effects

November 1, 2002
Author(s)
A Rigato, P C. Chang, Emil Simiu
We present a simple methodology, developed for use in design assisted by electronic aerodynamic and climatological databases (for short, database-assisted design), that allows a realistic assessment of wind directionality effects. We apply the methodology

Database-Assisted Design for Wind: Basic Concepts and Software Development

November 1, 2002
Author(s)
T Whalen, Fahim H. Sadek, Emil Simiu
Standard provisions for wind loads on buildings have traditionally been based on summary tables and/or plots suitable for slide-rule calculations. The accuracy in the definition of wind loads inherent in such tables and plots is far lower than that

Dealing with Degeneracy in Triangulation

November 1, 2002
Author(s)
Francis Sullivan, Isabel M. Beichl
This is a tutorial article on a quick method for dealing with degeneracy in geometric computations with specific reference to triangulation. The type degeneracy targeted by this article that of four or more points on a circle and five or more points on a

Development and Validation of Corridor Flow Submodel for CFAST

November 1, 2002
Author(s)
J. L. Bailey, Glenn P. Forney, P. A. Tatem, Walter W. Jones
The modeling of fire and smoke spread is an evolving field. As knowledge is acquired and resources become available, models are enhanced to make their predictions more accurate and/or their computations faster. This paper will discuss the Consolidated Fire

Fire Dynamics Simulator (Version 3): Users Guide (NISTIR 6748)

November 1, 2002
Author(s)
Kevin B. McGrattan, Glenn P. Forney, J E. Floyd, Simo A. Hostikka, Kuldeep R. Prasad
Fire Dynamics Simulator (FDS) is a computational fluid dynamics (CFD) model of fire-driven fluid flow. The software described in this document solves numerically a form of the Navier-Stokes equations appropriate for low-speed, thermally-driven flow with an

Flat-Phase Loading of a Bose-Einstein Condensate into an Optical Lattice

November 1, 2002
Author(s)
S E. Sklarz, I Friedler, D J. Tannor, Y B. Band, Carl J. Williams
It has been proposed that the adiabatic loading of a Bose-Einstein Condensate into an optical lattice via the Mott-Insulator transition can be used to initialize a quantum computer [D.Jaksch, et al., Phys. Rev. Lett. 81, 3108 (1998)]. The loading of a Bose

Impact of the Trapping of Anode Hot Holes on Silicon Dioxide Breakdown

November 1, 2002
Author(s)
Eric M. Vogel, Da-Wei Heh, J B. Bernstein
Hot holes are injected from the anode and trapped in thin silicon dioxide using constant voltage stress at large gate voltage. By comparing oxides having trapped holes with oxides in which the holes were detrapped, it is shown that the presence of trapped

Instantaneous and noninstantaneous nonlinear effects in femtosecond pulse propagation

November 1, 2002
Author(s)
H K. Eaton, Scott Diddams, A G. van Engen, Tracy S. Clement, A A. Zozulya
Propagation of intense femtosecond pulses in solids and liquids is investigated experimentally and numerically. Experiments in fusd silica reveal complicated spatio-temporal dunamics including temperal pulse splitting and the generation of spectral
Displaying 42676 - 42700 of 73960
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