Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"Thermal distribution"”.
-
Design and fabrication of electron energy filters for room temperature inelastic electron tunneling spectroscopy
… At room temperature, tunneling electrons possess thermal energy and occupy broad distribution of energy levels available in metals. This thermal distribution of electrons drastically reduces the resolution of IET spectroscopy. By reducing the thermal distribution of tunneling electrons at room …
-
Quasicentroid Molecular Dynamics
… the classical dynamics of coordinates subject to thermally averaged Feynman path fluctuations (“the mean field”). This theory approximates the dynamics of systems at thermal equilibrium that follow quantum Boltzmann statistics and undergo rapid quantum decoherence. As it relies on purely classical …
-
Three dimensional thermal modelling of high temperature proton exchange membrane fuel cells in a serpentine design
… FLUENT. The focus of my work is to study the thermal distribution within this segment. The results of the work aid in a better understanding of the fuel cell operation in this temperature range. At the time of my investigation experimental results were unavailable for validation and therefore …
-
High Efficiency SEPIC Converter For High Brightness Light Emitting Diodes (LEDs) System
… the features such as ripple cancellation, good thermal distribution and scalability.
-
Characterization and Modeling of the Thermal Properties of Photopolymers for Material Jetting Processes
… parts with embedded electronics, but the thermal management of these assemblies is a potential issue. Electrical components have efficiency losses, and a significant portion of that lost energy is converted into heat. Embedding electronics in PolyJet parts is of particular interest since …
-
Quantum computing for biophysical and optimization problems
… and the conformation of polymers according to a thermal distribution — we establish a deep connection with an Abelian lattice gauge theory populated with fermions. Building on this theoretical framework, we develop a quantum-inspired Monte Carlo protocol that not only eliminates the sign problem …
-
Dissipative heating and nonthermal distributions in black hole accretion flaring events
… much slower than would be expected from thermal emission alone. This thesis describes work to model these flares using general relativistic magnetohydrodynamics (GRMHD) and radiative transfer calculations with a nonthermal kappa distribution function (which effectively adds a power-law …
-
Proton deceleration near the surface on an accreting neutron star
… The evolution of the proton velocity-space distribution function is followed by integrating a Fokker-Planck equation numerically. The Fokker-Planck coefficients are calculated for conditions in which the electrons have a thermal distribution of velocities parallel to the field and remain in …
-
Coupled Field Modeling of Gas Tungsten Arc Welding
… electronic and power-generation industries. Thermally-induced residual stresses due to welding can significantly impair the performance and reliability of welded structures. Numerical simulation of weld pool dynamics is important as experimental measurements of velocities and temperature …
-
Electric Field Grading and Electrical Insulation Design for High Voltage, High Power Density Wide Bandgap Power Modules
… up to 250°C and frequency up to 1 MHz on E distribution and electric field grading methods mentioned in i) is studied; and v) A coupled thermal and electrical (electrothermal) model is developed to obtain thermal distribution within the module precisely. All models and simulations are …
-
Physics-informed Machine Learning for Digital Twins of Metal Additive Manufacturing
… with a high dimensional quality tensor (like thermal distribution in LPBF). Training the FNO with simulated data from PINN ensures a quick response to alter the course of the manufacturing process. Once trained, a DT can readily deploy the model for real-time process monitoring. The proposed …
-
Study of Dosimetric and Thermal Properties of a Newly Developed Thermo-brachytherapy Seed for Treatment of Solid Tumors
… and the simulation studies of radiation and thermal distribution properties of the seed have been performed. A preliminary experiment for the ferromagnetic induction heating of Ni-Cu needles has been carried out to ensure the practical feasibility of the induction heating.<p>Radiation dose …
-
Topological phases, non-equilibrium dynamics and parallels of black hole phenomena in condensed matter
… The Hawking-Unruh effect is the emergence of a thermal state when a vacuum of a quantum field theory on a given spacetime is restricted to a submanifold bounded by an event horizon. The thermal state manifests as Hawking radiation in the context of a black hole spacetime with an event horizon. …
-
Fundamental physics and application of plasma actuators for high-speed flows
… to alter a flow field. The emission was also thermally characterized through emission spectroscopy measurements where the vibrational and rotational temperatures of the plasma were determined. The last system considered was a localized arc filament plasma actuator, or LAFPA-type device. The …