Browsing Nuclear Engineering - Ph.D. / Sc.D. by Title
Now showing items 240-259 of 533
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Gas heat transfer in a heated vertical channel under deteriorated turbulent heat transfer regime
(Massachusetts Institute of Technology, 2007)Passive cooling via natural circulation of gas after a loss of coolant (LOCA) accident is one of the major goals of the Gas-cooled Fast Reactor (GFR). Due to its high surface heat flux and low coolant velocities under ... -
General analysis of breed-and-burn reactors and limited-separations fuel cycles
(Massachusetts Institute of Technology, 2011)A new theoretical framework is introduced, the "neutron excess" concept, which is useful for analyzing breed-and-burn (B&B) reactors and their fuel cycles. Based on this concept, a set of methods has been developed which ... -
The general evaluation of the nodal synthesis method in nuclear reactor transient analysis
(Massachusetts Institute of Technology, 1994) -
Generation of acoustic-gravity waves in ionospheric HF heating experiments : simulating large-scale natural heat sources
(Massachusetts Institute of Technology, 2012)In this thesis, we investigate the potential role played by large-scale anomalous heat sources (e.g. prolonged heat wave events) in generating acoustic-gravity waves (AGWs) that might trigger widespread plasma turbulence ... -
Global modeling of non-axisymmetric disruptions and halos currents in tokamaks
(Massachusetts Institute of Technology, 1997) -
The gridded electromagnet probe
(Massachusetts Institute of Technology, 2003)We attempted to measure the anisotropy in the electron distribution function in magnetized plasma by exploiting the adiabatic invariance of the electron's magnetic moment with a probe comprising a grid, a collector, and ... -
Heat transfer and fluid flow aspects of fuel-coolant interactions.
(Massachusetts Institute of Technology, 1979) -
High frequency gyrotrons and their application to tokamak plasma heating
(Massachusetts Institute of Technology, 1981) -
High power microwave generation using an active metamaterial powered by an electron beam
(Massachusetts Institute of Technology, 2016)This thesis presents the theory, design, and experimental demonstration of coherent microwave generation at 2.4 GHz in a metamaterial loaded waveguide using a 490 keV, 84 A, one microsecond pulse length electron beam that ... -
High resolution NMR scattering : the first measurement of spin diffusion rates in a homogeneous solid
(Massachusetts Institute of Technology, 1998)The first direct measurement of the rate of spin diffusion through a homogeneous sample was performed as an incoherent NMR scattering experiment. The experiment consists of a combination of pulsed gradient spin echo methods ... -
High-energy photon transport modeling for oil-well logging
(Massachusetts Institute of Technology, 2009)Nuclear oil well logging tools utilizing radioisotope sources of photons are used ubiquitously in oilfields throughout the world. Because of safety and security concerns, there is renewed interest in shifting to ... -
High-power target development for accelerator-based neutron capture therapy
(Massachusetts Institute of Technology, 2002)The production of clinically sufficient dose rates in Accelerator-based Neutron Capture Therapies (ABNCT) requires targets that can withstand ion beams of 2-10 kW or higher. Designing such a target requires knowledge of ... -
Homogenization and dehomogenization schemes for BWR assemblies
(Massachusetts Institute of Technology, 1983) -
Homogenization of BWR assemblies by response matrix methods
(Massachusetts Institute of Technology, 1981) -
Hydrodynamics of single- and two-phase flow in inclined rod arrays
(Massachusetts Institute of Technology, 1984) -
Hydrogen entry in Zircaloy-4 fuel cladding : an electrochemical study
(Massachusetts Institute of Technology, 2015)Corrosion and hydrogen pickup of zirconium alloy fuel cladding in water cooled nuclear reactors are life-limiting phenomena for fuel. This thesis studies the fate of hydrogen liberated by waterside corrosion of Zircaloy-4 ... -
Identification of good practices in the operation of nuclear power plants
(Massachusetts Institute of Technology, 2005)This work developed an approach to diagnose problems and identify good practices in the operation of nuclear power plants using the system dynamics technique. The research began with construction of the ORSIM (Nuclear Power ... -
Identification of performance indicators for nuclear power plants
(Massachusetts Institute of Technology, 2001)Performance indicators have been assuming an increasingly important role in the nuclear industry. An integrated methodology is proposed in this research for the identification and validation of performance indicators for ... -
Ignition and burn control characteristics of thermonuclear plasmas
(Massachusetts Institute of Technology, 1990) -
Impact of extended defects on ion diffusion and reactivity in binary oxides : assessed by atomistic simulations
(Massachusetts Institute of Technology, 2019)Extended defects, such as dislocations, grain boundaries and surface step edges, are ubiquitous in nanomaterials that function in electrochemical devices and heterogeneous catalysts. The objective of this thesis is to ...
