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Estimating Plume Volume for Geologic Storage of CO2 in Saline Aquifers

Description: Typically, when a new subsurface flow and transport problem is first being considered, very simple models with a minimal number of parameters are used to get a rough idea of how the system will evolve. For a hydrogeologist considering the spreading of a contaminant plume in an aquifer, the aquifer thickness, porosity, and permeability might be enough to get started. If the plume is buoyant, aquifer dip comes into play. If regional groundwater flow is significant or there are nearby wells pumpin… more
Date: July 11, 2008
Creator: Doughty, Christine
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Electrical configuration for magnetic drift pumping on the tandem mirror experiment-upgrade (TMX-U)

Description: Magnetic drift pumping on TMX-U involves driving four antennae through high Q-resonant circuits. One of the key elements in the resonant circuit is a variable inductor able to carry the 3500 amperes through the circuit and maintain its shape and inductance. The eight resonant circuits can be combined to feed the four antennae with one or two frequencies on each antenna, or frequency shift keying between two frequencies. Each resonant circuit is fed by two 10 to 30 kHz exciters capable of delive… more
Date: November 11, 1985
Creator: Jackson, M.C.; Kane, R.J. & Hulsey, S.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Concepts and development of drift pumping for the Tandem Mirror Experiment-Upgrade (TMX-U)

Description: Low-energy ions trapped in the thermal barrier region of the TMX-U plasma cause a potential reduction which results in increased scattering and less thermal isolation between regions of the plasma. A method of removing these ions using magnetic field perturbations at the ion drift frequency has been developed. The concepts of ''drift pumping'' and hardware development are described in this paper. 5 refs., 7 figs.
Date: November 11, 1985
Creator: Kane, R. J.; Pedrotti, L. R.; Brooksby, C. A.; Cummins, W. F.; Jackson, M. C.; Poulsen, P. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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ITER edge-plasma conditions versus pump configuration

Description: Two-dimensional fluid simulations of ITER double-null divertor scrape-off-layer plasma conditions have been restricted to examining a single outboard divertor plate with up/down symmetry assumed. The present work evaluates the effect of pumping at only one plate on particle flow patterns and other parameters of interest. Pumping only at one plate results in reduced sheath temperatures at both plates but an increased heat flux at the pumped plate. The physics assumptions for separatrix density (… more
Date: December 11, 1991
Creator: Werley, K.A. & Cohen, S.A. (Los Alamos National Lab., NM (United States) Princeton Univ., NJ (United States). Plasma Physics Lab.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

ITER edge-plasma conditions versus pump configuration

Description: Two-dimensional fluid simulations of ITER double-null divertor scrape-off-layer plasma conditions have been restricted to examining a single outboard divertor plate with up/down symmetry assumed. The present work evaluates the effect of pumping at only one plate on particle flow patterns and other parameters of interest. Pumping only at one plate results in reduced sheath temperatures at both plates but an increased heat flux at the pumped plate. The physics assumptions for separatrix density (… more
Date: December 11, 1991
Creator: Werley, K. A. & Cohen, S. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Sandy River Delta Habitat Restoration : Annual Report, January 2008 - March 2009.

Description: During the period 2008-2009, there were 2 contracts with BPA. One (38539) was dealing with the restoration work for 2007 and the other (26198) was an extension on the 2006 contract including the NEPA for Dam removal on the old channel of the Sandy River. For contract 38539, the Sandy River Delta Habitat Restoration project continued its focus on riparian hardwood reforestation with less emphasis on wetlands restoration. Emphasis was placed on Sundial Island again due to the potential removal of… more
Date: September 11, 2009
Creator: Dobson, Robin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Zero-Valent Iron Permeable Reactive Barriers: A Review of Performance

Description: This report briefly reviews issues regarding the implementation of the zero-valent iron permeable reactive barrier (PRB) technology at sites managed by the U.S. Department of Energy (DOE). Initially, the PRB technology, using zero-valent iron for the reactive media, was received with great enthusiasm, and DOE invested millions of dollars testing and implementing PRBs. Recently, a negative perception of the technology has been building. This perception is based on the failure of some deployments… more
Date: June 11, 2001
Creator: Korte, NE
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of 3 Inch SN-219 Failure and S and SX Tank Farm Saltwell Piping

Description: Evaluation of direct buried piping currently in use or designated for future Saltwell pumping in S and SX Farms. Documented evaluation of failed S-103 saltwell pumping transfer line 3 inch SN-219. This evaluation is intended to reflect current status of Saltwell piping, when taken in context with referenced documents.
Date: February 11, 2000
Creator: ELSEN, J.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Diode-pumped solid-state laser driver experiments for inertial fusion energy applications

Description: Although solid-state lasers have been the primary means by which the physics of inertial confinement fusion (ICF) have been investigated, it was previously thought that solid-state laser technology could not offer adequate efficiencies for an inertial fusion energy (IFE) power plant. Orth and co-workers have recently designed a conceptual IFE power plant, however, with a high efficiency diode-pumped solid-state laser (DPSSL) driver that utilized several recent innovations in laser technology. I… more
Date: July 11, 1995
Creator: Marshall, C. D.; Payne, S. A.; Emanuel, M. E.; Smith, L. K.; Powell, H. T. & Krupke, W. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High Repetition Rate Grazing Incidence Pumped X-ray Laser operating at 18.9 nm

Description: We have demonstrated a 10 Hz Ni-like Mo X-ray laser operating at 18.9 nm with 150 mJ total pump energy by employing a novel pumping scheme. The grazing incidence scheme is described, where a picosecond pulse is incident at a grazing angle to a Mo plasma column produced by a slab target irradiated by a 200 ps laser pulse. This scheme uses refraction of the short pulse at a pre-determined electron density to increase absorption to pump a specific gain region. The high efficiency inherent to this … more
Date: May 11, 2004
Creator: Keenan, R.; Dunn, J.; Patel, P. K.; Price, D. F.; Smith, R. F. & Shlyaptsev, V. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High Pressure Pump Seal Development

Description: "Results of tests indicate that the nucerite-bearium seal system is compatible. This combination was operated as long as 9 hours without serious damage. In other work, the test rig was modified to eliminate pressure fluctuations and extraneous dirt, and Type IIA seal parts were designed."
Date: June 11, 1962
Creator: Zanoni, P. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Demonstration of optimization techniques for groundwater plumeremediation using iTOUGH2

Description: We examined the potential use of standard optimization algorithms as implemented in the inverse modeling code iTOUGH2 (Finsterle, 1999abc) for the solution of aquifer remediation problems. Costs for the removal of dissolved or free-phase contaminants depend on aquifer properties, the chosen remediation technology, and operational parameters (such as number of wells drilled and pumping rates). A cost function must be formulated that may include actual costs and hypothetical penalty costs for inc… more
Date: November 11, 2004
Creator: Finsterle, Stefan
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Brookhaven National Laboratory Perfluorocarbon Tracer Technology: A Proven and Cost Effective Method to Verify Integrity and Monitor Long Term Performance of Walls, Floors, Caps, and Cover Systems.

Description: Currently, containment system failures are detected by monitoring wells downstream of the waste site. Clearly this approach is inefficient, as the contaminants will have migrated from the disposal area before they are detected. Methods that indicate early cover failure (prior to contaminant release) or predict impending cover failure are needed. The Brookhaven National Laboratory (BNL) Perfluorocarbon Tracer (PFT) technology can measure performance changes and integrity losses as the cover ages… more
Date: March 11, 2002
Creator: Heiser, J. & Sullivan, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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