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 12 of 12 for “"Coupled problem"”.
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Spacecraft trajectory tracking and parameter estimation in the presence of a splitting contact binary asteroid
… which describes the splitting system. The coupled problem of estimating unknown parameters of a newly-formed binary system and controlling a spacecraft’s trajectory in the system’s vicinity is investigated. An indirect adaptive control scheme is utilized to simultaneously and accurately …
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Multiple interval methods for ODEs with an optimization constraint
… arising in biofilm modelling. This class of problems is challenging for several reasons. One of the reasons is that the underlying solution has a steep slope, making it difficult to resolve. We propose a new numerical method with techniques such as domain decomposition and asynchronous …
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Coupled orbit-attitude mission design in the circular restricted three-body problem
… of orbits in the Circular Restricted Three-Body Problem (CR3BP). Given the more complex dynamical environment, mission applications may also benefit from deeper insight into the attitude motion. In this investigation, the attitude dynamics are coupled with the trajectories in the CR3BP. In a …
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Assessing Health Vulnerability to Air Pollution in Seoul Using an Agent-Based Simulation
… Finally, a traffic simulation examined the coupled problem of non-exhaust emissions and behaviour and estimate exposure to PM10 for groups of drivers and pedestrians in central Seoul. Having tested the sensitivity to calibrated parameters, scenarios of traffic restriction and modification of …
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Computational Techniques for Efficient Solution of Discretized Biot's Theory for Fluid Flow in Deformable Porous Media
… modeling three-dimensional consolidation type of problem. The analysis of the porous media with fully-coupled simulations based on the Biot's theory requires intensive computational effort due to the large number of interacting fields. Therefore, advanced computational techniques need to be …
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Chemo-mechanics of lithium-ion battery electrodes
… implementation, and application of fully-coupled deformation-diffusion theories aimed at two different classes of electrode materials: (i) phase-separating electrodes, and (ii) amorphous Silicon electrodes, which are elaborated on next. Central to the study of phase-separating electrodes …
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A finite element method for the fully-coupled magnetohydrodynamics
… equation is obtained. Magnetohydrodynamic problems are, thus, interdisciplinary and coupled in a two-way fashion, since the effect of the velocity field appears in the magnetic transport equations, and the interaction between the electric current and the magnetic field appears in the …
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FINITE ELEMENT METHODS AND MACHINE LEARNING FOR SOME MULTI-PHASE PROBLEMS
… computational methodologies for multi-phase problems. The first part of the thesis focus on computational models for complex interface coupled flow problems. The problem is studied both numerically and analytically. More specifically, an unfitted finite ele- ment approach for the simulation …
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A variational framework for multi-scale defect modeling in strained electronics and processing of composite materials
… fluids within a unified formulation. Coupled with the thermal evolution within the constituents of the material and accounting for phase change and mass leading to mass transfer across the interface the materials, kinetic evolution of the material viscosities is modeled at the material …
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The Virtual Element Method: Stability Issues and Mixed-Dimensional Applications in Soil Domains
L'abstract è presente nell'allegato / the abstract is in the attachment
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Stable algorithms for generalized thermoelasticity based on operator-splitting and time-discontinuous Galerkin finite element methods
… with the theoretical and numerical analysis of coupled problems in thermoelasticity. Of particular interest are models that support propagation of thermal energy as waves, rather than the usual mechanism by diffusion. The thesis consists of two parts. The first deals with the non-classical, …
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Simulating fluid-solid interaction using smoothed particle hydrodynamics method
… modeling framework based on SPH to model the coupled problem, with application to wave impact on floating offshore structures, and the hydraulic fracturing of rocks induced by fluid pressure. An accurate estimate of forces exerted by waves on offshore structures is vital to assess potential …