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.
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Showing 1 to 20 of 619 for “"Diffusive"”.
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"Thermal-burst modeling of a double-diffusive ""diffusive"" interface"
"The operation of a double-diffusive ""diffusive"" interface may be characterized by three regimes: quasi-steady entraining (often called the variable regime), quasi-steady non-entraining (often called the constant regime), and transient. Using a thermal burst modeling approach, new models have …
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Viscous and diffusive effects in magnetoplasmadynamic flows
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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Study of microscopic structure via NMR diffusive scattering
Scattering experiments can be carried out by gradient nuclear magnetic resonance(NMR) methods. Magnetic field gradient pulses are utilized to create linear phase ramps of the spin magnetization across the sample along arbitrary directions. The linear phase ramps are defined as dynamic spin …
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Radiative-diffusive models of the Arctic boundary layer
Thesis. 1975. Sc.D.--Massachusetts Institute of Technology. Dept. of Meteorology.
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Steady State Properties of Some Driven Diffusive Systems
In an attempt to reach a better understanding of the properties and critical behavior of non-equilibrium systems, we investigate the steady state properties of three simple models, variations of the prototype, the driven Ising lattice gas. Our first system studied is the bilayer model, a stack of …
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Impacts of double-diffusive processes on the thermohaline circulation
Double-diffusive processes are studied and parameterized, and their impacts on the oceanic thermohaline circulation are investigated by single-hemisphere numerical models and scaling analysis. Scaling analysis on the thermohaline circulation has been done under three types of surface boundary …
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Impacts of double-diffusive processes on the thermohaline circulation
Double-diffusive processes are studied and parameterized, and their impacts on the oceanic thermohaline circulation are investigated by single-hemisphere numerical models and scaling analysis. Scaling analysis on the thermohaline circulation has been done under three types of surface boundary …
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The development of layers in direct double-diffusive convection
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1984.
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The Cauchy problem for the Diffusive-Vlasov-Enskog equations
… friction forces. The Cauchy problem for the Diffusive-Vlasov-Poisson-Enskog equation (DVE) and the Cauchy problem for the Fokker-Planck-Vlasov-Poisson-Enskog equation (FPVE) are addressed.
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Theoretical and Simulation Studies of a Driven Diffusive System
We explore steady-state properties of a driven lattice gas, which is a simple model of interacting many-particle systems, driven far from equilibrium by an external field. First, we study a system on a square lattice with periodic boundary conditions (PBC) along both principal lattice axes, while …
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Multidimensional diffusive shock acceleration in the Winds from massive stars
… winds in a binary system. Very few numerical Diffusive Shock Acceleration (DSA) simulations exist for these systems due to the complicated, multidimensional nature of the winds. We present the first 2-D magnetohydrodynamic DSA (MHD-DSA) simulations of massive stellar winds using the …
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Mechanisms of diffusive charge transport in redox active polymer solutions
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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The ramifications of diffusive volume transport in classical fluid mechanics
… represents the heretofore largely ignored diffusive transport of volume. We will begin by giving a motivating discussion containing example problems which point to the possible need for a change in the constitutive choice for in. This will be followed by a brief outline of the kinematic …
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Thermoreflectance Measurements of Non-Diffusive Transport In Bulk And Nanoscale Materials
… heat transport deviates from the classic diffusive regime and its physics is still being understood. To examine the thermal performance of these structures and materials at different length scales and in different heating dynamics, suitable metrology techniques are needed. In this …
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Collaborative Information Processing in Wireless Sensor Networks for Diffusive Source Estimation
… of collaborative information processing for diffusive source parameter estimation using wireless sensor networks (WSNs) capable of sensing in dispersive medium/environment, from signal processing perspective. We begin the dissertation by focusing on the mathematical formulation of a special …
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Contributions in fractional diffusive limit and wave turbulence in kinetic theory
This thesis is split in two different topics. Firstly, we study anomalous transport from kinetic models. Secondly, we consider the equations coming from weak wave turbulence theory and we study them via mean-field limits of finite stochastic particle systems. $\textbf{Anomalous transport from …
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Macrotransport process in branching networks : modeling convective-diffusive phenomena in the lung
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1994.
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Application of Network Reliability to Analyze Diffusive Processes on Graph Dynamical Systems
… as a global statistic to explore the behavior of diffusive processes on a graph dynamical system representing a finite sized interacting system. It depends on both the network topology and the dynamics of the process and gives the probability that the system has a particular desired property. Due …
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Applications of Field Theory to Reaction Diffusion Models and Driven Diffusive Systems
In this thesis, we focus on the steady state properties of two systems which are genuinely out of equilibrium. The first project is an application of dynamic field theory to a specific non equilibrium critical phenomenon, while the second project involves both simulations and analytical …
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