Series
OSP Final Research Reports

Permanent Link
https://hdl.handle.net/1853/71005
Series Type
Publication Series
Description
Associated Organization(s)
Associated Organization(s)
Organizational Unit

Filters

2236
2236
2236
Reset filters

Settings

Publication Search Results

Now showing 1 - 10 of 2236
Thumbnail Image
Item

Exploration of the energy and thermal behaviors of emerging architectures

2014-09-30 , Yalamanchili, Sudhakar , Kim, Hyesoon

View
Thumbnail Image
Item

Magneto-optical study of correlated electron materials in high magnetic fields

2014-01 , Jiang, Zhigang

View
Thumbnail Image
Item

Forced internal convection mist cooling heat transfer

2013-09-26 , Sadowski, Dennis L.

This report describes work completed and results achieved on the” Forced Internal Convection Mist Cooling Heat Transfer” project from its inception on November 4, 2002 through its conclusion on August 31, 2013. This work involved close collaboration between the Georgia Institute of Technology (GT), the Schoonover Consulting Group (SCG), and the Naval Research Laboratory (NRL). The primary goal of the project was to design, develop, and test a system to adequately cool the Hibachi foils in the Electra KrF laser at the Naval Research Laboratory in Washington, DC. Though it took several iterations, we did successfully devise a system which met the goal of keeping the foils cool with minimal disruption to the focal profile or efficiency of the laser. By withdrawing a relatively small amount of KrF gas from the laser and redirecting it towards the Hibachi foils in the form of hundreds of tiny high velocity near-wall jets the foils showed a dramatic decrease in temperature. Focal profile measurements of the laser beam were far better than that achieved by any other cooling system. It is unfortunate that Congressional funding cuts scuttled the Electra program before we were able to complete full-scale, long-term testing with gas recirculation.

View
Thumbnail Image
Item

Computational modeling of mechanical heart valves

2013-06-30 , Yoganathan, Ajit P.

View
Thumbnail Image
Item

Data staging on future platforms: Systems management for high performance and resilience

2014-05 , Schwan, Karsten , Eisenhauer, Greg S. , Wolf, Matthew

View
Thumbnail Image
Item

Dynamic modeling of plasma effects during multi-phase detonations near a surface and/or in a magnetic field

2013-12 , Menon, Suresh , Schulz, Joseph

A multi-physics model has been developed to simulate detonations and condensed-phase explosions in the presence of an external electromagnetic field. To simulate these effects, models for high-temperature gas physics, plasma-production, dispersed-phase mixing, and turbulence have been implemented within the framework of a numerical method capable of simulating magnetohydrodynamic (MHD) flows. This research has leveraged past work in MHD flows, detonations, and turbulence-chemistry interactions to study multi-scale detonation-plasma-field interactions, and has furthered the understanding of many key physical processes of these flows. This work targeted three main basic science objectives: the study of plasma-production by detonations and condensed-phase explosions, the study of MHD instabilities and turbulence relevant to post-detonation flows, and the study of how a detonation is affected by the presence of a magnetic field. Simulations indicate that gaseous detonation waves generate a weakly ionized plasma in the post-detonation region. The average electrical conductivity in the post-detonation flow, however, is of the order of 10-3 S/m, and practical engineering applications involving the use of MHD forces to manipulate the flow for generation of electrical power, propulsive thrust, etc., require higher levels of electrical conductivity. Simulations of mixtures seeded with particles of a low ionization potential show a substantial increase the flow's electrical conductivity. The presence of these particles can adversely affect the detonation propagation. The physics of how an electromagnetic field interacts with the conducting products of a detonation, and how that interaction might affect the stability and propagation of the detonation wave is systematically studied. The magnetic field applied in the direction of detonation propagation affects the detonation through a combined effect of Joule heating and Lorentz force, in some cases altering the cellular structure of the detonation completely by reducing the half-reaction zone thickness. Basic studies of the Richtmyer-Meshkov instability, an important mechanism for the transition to turbulence in explosions, are used to elucidate several salient features of these types of MHD flows. Namely, simulations show that the presence of a dispersed phase alters the mixing growth-rates of the instability, and furthermore, an applied magnetic field is shown to either suppress or enhance fluid mixing.

View
Thumbnail Image
Item

Qameleon: Hardware/software cooperative automated tuning for heterogeneous architectures

2013-08 , Kim, Hyesoon , Vuduc, Richard

The main goal of this project is to develop a framework that simplifies programming for heterogeneous platforms. The framework consists of (i) a runtime system to generate code that partitions and schedules work among heterogeneous processors, (ii) a general automated tuning mechanism based on machine learning and (iii) performance and power modeling techniques and profiling techniques to aid code generation.

View
Thumbnail Image
Item

Development of a label free glycan arrays for the detection of prostate cancer

2014-04 , Adibi, Ali

View
Thumbnail Image
Item

Theory and algorithms for convex programming

2013-10-31 , Monteiro, Renato D. C.

View
Thumbnail Image
Item

Physical modeling of low-k dielectric breakdown and the estimation

2013-08 , Milor, Linda S.

View