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New Perspectives on Turbulent Mixing Induced by Rayleigh-Taylor and Richtmyer-Meshkov Instabilities

Description: Turbulent hydrodynamic mixing induced by the Rayleigh-Taylor (RT) and Richtmyer-Meshkov (RM) instabilities occurs in settings as varied as exploding stars (supernovae), inertial confinement fusion (ICF) capsule implosions, and macroscopic flows on fluid dynamics facilities such as shock tubes. We have developed a quantitative description of turbulence from the onset to the asymptotic end-state. Our treatment, based on a combined approach of theory, direct numerical simulation (DNS), and experim… more
Date: October 30, 2002
Creator: Zhou, Y.; Remington, B. A.; Glendinning, S. G.; Dimits, A.; Buckingham, A. C.; Robey, H. F. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Density distribution for a polymer absorbed at an oil-waterinterface

Description: The interaction between a polymer segment and an oil-water interface is represented by an asymmetric square-well potential where the well-depth on one side reflects water-polymer and the well depth on the other side reflects oil-polymer interactions. The polymer is represented by a Gaussian chain. The polymer's density distribution is calculated along a coordinate perpendicular to the interface. Results are obtained as a function of the well width, the well depth and its asymmetry and, most imp… more
Date: October 30, 2002
Creator: Cai, Jun & Prausnitz, John M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Final Report for Grant DE-FG05-94ER14421 Period 11/1/2001-10/31/2002 Molecular Modeling and Simulation of Aqueous Electrolyte Systems

Description: Our proposal focused on the following research areas: (1) Development of intermolecular potentials for water and aqueous solutions; (2) Molecular-based study of polymorphic phase transitions and growth of nanocrystalline aggregates in hydrothermal solutions; (3) Molecular simulation of ion-pairing in high-temperature high-pressure electrolyte solutions; and (4) SAFT equation of state modeling of supercritical aqueous solutions - (a) Solubility of alkanes in supercritical water, and (b) Ion spec… more
Date: October 30, 2002
Creator: Cummings, Peter T. & McCabe, Clare
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Inert-Matrix Fuel: Actinide ''Buringin'' and Direct Disposal

Description: Excess actinides result from the dismantlement of nuclear weapons (Pu) and the reprocessing of commercial spent nuclear fuel (mainly 241 Am, 244 Cm and 237 Np). In Europe, Canada and Japan studies have determined much improved efficiencies for burnup of actinides using inert-matrix fuels. This innovative approach also considers the properties of the inert-matrix fuel as a nuclear waste form for direct disposal after one-cycle of burn-up. Direct disposal can considerably reduce cost, processing … more
Date: October 30, 2002
Creator: Ewing, Rodney C. & Wang, Lumin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DETECTION OF UNAUTHORIZED CONSTRUCTION EQUIPMENT IN PIPELINE RIGHT-OF-WAYS

Description: Natural gas transmission companies mark the right-of-way areas where pipelines are buried with warning signs to prevent accidental third-party damage. Nevertheless, pipelines are sometimes damaged by third-party construction equipment. A single incident can be devastating, causing death and millions of dollars of property loss. This damage would be prevented if potentially hazardous construction equipment could be detected, identified, and an alert given before the pipeline was damaged. The Gas… more
Date: October 30, 2002
Creator: Huebler, James E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrodeposition of Plutonium

Description: Equipment for electrolytic deposition of plutonium from molten salt solutions was designed and built and was tested with cerium as a stand-in for plutonium. The electrolysis cell is a graphite crucible that serves as the anode; the cathode is a molybdenum rod. This paper discusses results of that test.
Date: October 30, 2002
Creator: Kelley, H.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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