Search for dissertations about: "adjoint problem"
Showing result 1 - 5 of 37 swedish dissertations containing the words adjoint problem.
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1. Data Assimilation in Fluid Dynamics using Adjoint Optimization
Abstract : Data assimilation arises in a vast array of different topics: traditionally in meteorological and oceanographic modelling, wind tunnel or water tunnel experiments and recently from biomedical engineering. Data assimilation is a process for combine measured or observed data with a mathematical model, to obtain estimates of the expected data. READ MORE
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2. Shape Optimization for Electromagnetic and Quasimagnetostatic Applications
Abstract : This thesis uses a continuum formulation of sensitivity for shape optimization in two-dimensional microwave scattering and quasimagnetostatic problems. The continuum sensitivity is obtained by solving an appropriate adjoint problem. READ MORE
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3. Adjoint-based aerodynamic shape optimization
Abstract : An adjoint system of the Euler equations of gas dynamics is derived in order to solve aerodynamic shape optimization problems with gradient-based methods. The derivation is based on the fully discrete flow model and involves differentiation and transposition of the system of equations obtained by an unstructured and node-centered finite-volume discretization. READ MORE
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4. Direct and Inverse Methods for Waveguides and Scattering Problems in the Time Domain
Abstract : Numerical simulation is an important tool in understanding the electromagnetic field and how it interacts with the environment. Different topics for time-domain finite-difference (FDTD) and finite-element (FETD) methods for Maxwell's equations are treated in this thesis. READ MORE
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5. Analysis, Control, and Design Optimization of Engineering Mechanics Systems
Abstract : This thesis considers applications of gradient-based optimization algorithms to the design and control of some mechanics systems. The material distribution approach to topology optimization is applied to design two different acoustic devices, a reactive muffler and an acoustic horn, and optimization is used to control a ball pitching robot. READ MORE