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NIST Authors in Bold

Displaying 2126 - 2150 of 3908

Micro Channel Heat Transfer, Pressure Drop and Macro Prediction Methods

June 1, 2003
Author(s)
Mark A. Kedzierski
Advances in the basic understanding of fluid physics have opened an era of unprecedented application of heat transfer processes, and fluid dynamics systems using micro channels. One of the greatest obstacles to the application of leading edge fluid physics

Report of Test on Experimental Conditions and Preliminary Results for the International Fire Model Benchmarking And Validation Exercise #3

June 1, 2003
Author(s)
Anthony P. Hamins, Alexander Maranghides, Erik L. Johnsson, Michelle K. Donnelly, Jiann C. Yang, George W. Mulholland
As part of its Fire Risk Research Program, the NRC (Nuclear regulatory Commission) and NIST (National Institute of Standards and Technology) are participating in an International Collaborative Fire Model Project (ICFMP) to assess and validate fire computer

Simulation of Cup-Burner Flames in Microgravity

June 1, 2003
Author(s)
V Katta, F Takahashi, Gregory T. Linteris
The extinction process of cup-burner flames under normal-gravity conditions were previously studied. As the low-speed diffusion flames behave differently in microgravity compared to those on earth, it is important to understand the structureof cup-burner

Thermal and Flammability Properties of a Silica-PMMA Nanocomposite

June 1, 2003
Author(s)
Takashi Kashiwagi, A B. Morgan, Joseph M. Antonucci, Mark R. VanLandingham, Richard H. Harris Jr., W H. Awad, John R. Shields
PMMA, poly(metheylmethacrylate), nanocomposites were made by in situ radical polymerization of MMA, methylmethacrylate, with colloidal silica (ca. 12 nm) to study the effects of nanoscale silica particles on the physical properties and flammability

Reactive Molecular Dynamics Model of Thermal Decomposition in Polymers

May 11, 2003
Author(s)
Stanislav I. Stoliarov, Marc R. Nyden, R E. Lyon
The application of quantum chemical and molecular simulation methods can reveal new insights into the thermal degradation chemistries of materials. This work presents and employs an extension of classical force-field-based molecular dynamics to modeling

Database-Assisted Design and Structural Reliability for Building Codes

May 1, 2003
Author(s)
S M. Diniz, Emil Simiu
We present a database-assisted design (DAD)-compatible probabilistic procedure for estimating (a)wind effects for any return period and (b) wind load factors. Unlike earlier reliability estimates, we account for the randomness of peak effects and for

Developments toward an Autonomous Robotic Crane for Automated Steel Construction

May 1, 2003
Author(s)
Kamel S. Saidi, Alan M. Lytle, Nicholas A. Scott
The NIST Construction Metrology and Automation Group, in cooperation with the NIST Intelligent Systems Division, is researching robotic structural steel placement as part of a project to develop an Automated Steel Construction Testbed. This project was

Relating Fresh Concrete Viscosity Measurements From Different Rheometers

May 1, 2003
Author(s)
Chiara F. Ferraris, Nicos Martys
The rheological properties of concrete need to be measured and predicted to enable the characterization of special concrete such as self-consolidating concrete (SCC). It was also shown by a round-robin held in 2000 [ , ] that different rheometers give a

Simulation of Heat Exchangers of a Window Air Conditioner Retrofitted with R-407C

May 1, 2003
Author(s)
S Devotta, A S. Padalkar, N K. Sane, Piotr A. Domanski, N N. Sawant
This paper presents the results of simulation of heat exchangers of an HCFC-22 window air conditioner retrofitted with R-407C. The test conditions considered are as per the Indian Standard IS 1391 (1992) for unitary air conditioners. The simulation has

Structural Collapse Fire Tests: Single Story, Ordinary Construction Warehouse

May 1, 2003
Author(s)
D W. Stroup, Daniel M. Madrzykowski, William D. Walton, W H. Twilley
Two fire tests were conducted in a warehouse located in Phoenix, Arizona to develop data for evaluation of a methodology for predicting structural collapse. A firewall was constructed to divide the warehouse into two fire compartments. Temperatures were

Suppression Limits of Low Strain Rate Non-Premixed Methane Flames

May 1, 2003
Author(s)
Matthew F. Bundy, Anthony P. Hamins, Ki Y. Lee
The suppression of low strain rate non-premixed flames was investigated experimentally in a counterflow configuration for laminar flames with minimal conductive heat losses. This was accomplished by varying the velocity ratio of fuel to oxidizer to adjust

Visualization of Structural Steel Product Models

May 1, 2003
Author(s)
Robert R. Lipman, K A. Reed
A visual interface has been developed to provide a means for users to visualize the steel structure represented by a CIMsteel Integration Standards Release 2 (CIS2) file. Using a web-accessible translator, objects in a user's CIS2 file are mapped to

Performance-Based Fire Protection of Historical Structures

April 6, 2003
Author(s)
Richard W. Bukowski, V Nuzzolese, M Bindo
Performance-based fire protection design methods are particularly appropriate for renovation of historical and culturally significant buildings. This is because they allow the freedom to upgrade fire safety while maintaining sensitivity to the significant

Energy Dissipation Devices for Bridges with Steel Superstructures

April 1, 2003
Author(s)
Michael A. Riley
Recent earthquakes have clearly demonstrated the seismic vulnerability of bridges constructed with steel superstructures. The relative flexibility of these bridges, especially in the transverse direction, may result in overstressing or even failure of
Displaying 2126 - 2150 of 3908
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