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You searched on: Author: nicos martys

Displaying records 61 to 70 of 81 records.
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61. Critical Properties and Phase Separation in Lattice Boltzmann Fluid Mixtures
Published: 3/1/2001
Authors: Nicos Martys, Jack F Douglas
Abstract: Basic equilibrium properties of Lattice Boltzmann (LB) fluid mixtures (coexistence curve, surface tension, interfacial profile, correlation length) are calculated to characterize the critical phenomena occurring in these model liquids and to establis ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860263

62. Critical Properties and Phase Separation in Lattice Boltzmann Fluid Mixtures
Published: 1/1/2001
Authors: Nicos Martys, Jack F Douglas
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853775

63. Accelerating Scientific Discovery through Computation and Visualization
Series: Journal of Research (NIST JRES)
Published: 11/1/2000
Authors: James S Sims, John G Hagedorn, Peter M. Ketcham, Steven G Satterfield, Terence J Griffin, William L George, H A Fowler, B A. am Ende, Howard Hung, Robert B Bohn, John E Koontz, Nicos Martys, Charles E. Bouldin, James A Warren, D L Feder, Charles W Clark, Bernard J Filla, Judith Ellen Terrill
Abstract: The rate of scientific discovery can be accelerated through computation and visualization. This acceleration results from the synergy of expertise, computing tools, and hardware for enabling high performance computation, information science, and visu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=152135

64. User's Guide to the NIST Virtual Cement and Concrete Testing Laboratory. Version 1.0
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6583
Published: 11/1/2000
Authors: Jeffrey W Bullard, Chiara F Ferraris, Edward Joseph Garboczi, Nicos Martys, Paul E Stutzman
Abstract: This NISTIR serves as the user's manual for Version 1.0 of the Virtual Cement and Concrete Testing Laboratory (VCCTL). Using the VCCTL, a user may create starting microstructures of cement (gypsum, fly ash, etc.) particles in water, hydrate the micr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860310

65. Using Impedance Spectroscopy to Assess the Viability of the Rapid Chloride Test for Determining Concrete Conductivity
Series: Journal of Research (NIST JRES)
Published: 7/1/2000
Authors: Kenneth Alan Snyder, Chiara F Ferraris, Nicos Martys, Edward Joseph Garboczi
Abstract: The suitability of using the initial current from the rapid chloride test (ASTM C 1202) to determine specimen conductivity is tested using impedance spectroscopy with a frequency spectrum of 10 Hz to 1 MHz. The specimen conductivity has an analytica ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860144

66. Simulation of Fluid Flow and Permeability in Cohesionless Soils
Published: 4/1/2000
Authors: E Masad, B Muhunthan, Nicos Martys
Abstract: This paper reports on a new laboratory methodology for the determination of the structure of pores, a method for the analysis of the data to obtain the statistics of the pore structure distribution, simulation of porous media with statistics consiste ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860250

67. Energy Conserving Discrete Equation for Non-Ideal Systems
Published: 10/20/1999
Author: Nicos Martys
Abstract: The BBGKY formalism is utilized to obtain a set of moment equations to be satisfied so as to obtain an energy conserving discrete Boltzmann equation for the case of a non-local interaction potential. A modified BGK form of the collision operator con ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860155

68. Diffusion in Partially Saturated Porous Materials
Published: 10/1/1999
Author: Nicos Martys
Abstract: The diffusive transport of ions in two classes of porous media was studied as a function of fluid saturation and wetting properties. A lattice Boltzmann method was used to model phase separation of a binary mixture, including wetting effects, in por ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860120

69. Energy Conserving Discrete Boltzmann Equation for Nonideal Systems
Published: 10/1/1999
Author: Nicos Martys
Abstract: The BBGKY formalism is utilized to obtain a set of moment equations to be satisfied by the collision operator in an energy conserving discrete Boltzmann equation for the case of a nonlocal interaction potential. A modified BGK form of the collision o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860159

70. Pore Scale Modeling of Fluid Transport Using Lattice Boltzmann Methods
Published: 10/1/1999
Authors: Nicos Martys, John G Hagedorn, J E Devaney
Abstract: The utility of the lattice Boltzmann method for modeling fluid flow in complex geometries like porous materials is examined. After study of some simple test cases, results from large scale simulations of fluid flow through digitized Fontainbleau sand ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860210



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