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You searched on: Author: nicos martys

Displaying records 21 to 30 of 77 records.
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21. Contaminant Dispersal in Obstructed Flow
Published: 4/6/2008
Authors: Nicos Martys, Stephen J. Treado
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861659

22. Measurement and Modeling of Turbulent Flow in Water Supply Systems and Its Effect on Contaminant Transport
Published: 11/4/2007
Authors: Stephen J. Treado, Nicos Martys, Mark A Kedzierski, Stephanie S Watson, Kenneth D Cole
Abstract: This paper describes the results of a measurement and modeling research project investigating the transport, accumulation and removal of contaminants from within water supply systems, including piping, fittings and fixtures. The traditional approach ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861666

23. Parallel-Plate Rheometer Calibration Using Oil and Lattice Boltzmann Simulation
Published: 10/11/2007
Authors: Chiara F Ferraris, Nicos Martys, M R Geiker, N V. Muzzatti
Abstract: The flow in traditional rotational rheometers is well known and rheological parameters such as viscosity can be calculated relatively easily. On the other hand, when the fluid is a suspension that contains particles with a diameter up to 2 mm, these ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860485

24. Calibration of Modified Parallel-Plate Rheometer Using Standard Oil and Lattice Boltzmann Simulation
Published: 10/3/2007
Authors: Chiara F Ferraris, M R Geiker, Nicos Martys, N V. Muzzatti
Abstract: Fluid flow patterns in traditional rotational rheometers are generally well known and rheological parameters such as viscosity can be easily calculated from experimental data of single phase fluids and analytical solutions of the patterns. However, w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860701

25. Cement and Concrete Materials Research at the National Institute of Standards and Technology (NIST)
Published: 9/5/2007
Authors: Edward Joseph Garboczi, Dale P Bentz, Jeffrey W Bullard, Chiara F Ferraris, Nicos Martys, Max A Peltz, Sudalin Rodrigues, Paul E Stutzman, Kenneth Alan Snyder, John A. Winpigler
Abstract: The materials science of cement and concrete is the focus of the Inorganic Materials Group at the National Institute of Standards and Technology (NIST). These experimental and computational research efforts include component and finished materials ch ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860715

26. Computational Model Predictions of Suspension Rheology: Comparison to Experiment
Published: 7/25/2007
Authors: Nicos Martys, Chiara F Ferraris, V Gupta, Josephine H Cheung
Abstract: Predicting the rheological properties of fresh concrete, mortars, and cement paste from first principles remains a great challenge. While progress has been made in modeling the rheological properties of idealized hard sphere-like suspensions, there i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860732

27. A Stokes Permeability Solver for Three-Dimensional Porous Media
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7416
Published: 4/4/2007
Authors: Dale P Bentz, Nicos Martys
Abstract: A set of C and Fortran computer programs have been developed for computing the permeability of three-dimensional porous media under incompressible Stokes flow conditions. In this NISTIR, the background for developing these codes is reviewed and the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860711

28. Report of Phase One Measurement and Analysis of Building Water System Contamination and Decontamination
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7351
Published: 7/3/2006
Authors: Stephen J. Treado, Mark A Kedzierski, Stephanie S Watson, Dale P Bentz, Nicos Martys, Kenneth D Cole
Abstract: This report describes the results of the first phase of a research project to evaluate how contaminants accidentally or intentionally introduced into the water supply might accumulate in building plumbing systems, and how these contaminants might be ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861008

29. Virtual Testing of Cement and Concrete
Published: 5/10/2006
Authors: Dale P Bentz, Edward Joseph Garboczi, Jeffrey W Bullard, Chiara F Ferraris, Nicos Martys, Paul E Stutzman
Abstract: Concrete is a unique multi-phase, random, complex, and composite material that provides both strength and impermeability to engineered structures. Unlike most construction materials, the properties of concrete continue to develop over time and in pl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860546

30. Study of a Dissipative Particle Dynamics Based Approach for Modeling Suspensions.
Published: 12/1/2005
Author: Nicos Martys
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101143



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