Search for dissertations about: "three-dimensional grid"
Showing result 1 - 5 of 29 swedish dissertations containing the words three-dimensional grid.
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1. Hybrid Grid Generation for Viscous Flow Computations Around Complex Geometries
Abstract : A set of algorithms building a program package for the generation of twoandthree-dimensional unstructured/hybrid grids around complex geometrieshas been developed. The unstructured part of the grid generator is based on the advancing frontalgorithm. READ MORE
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2. Investigating polymorphism in small molecules using three-dimensional electron diffraction
Abstract : For scientific, regulatory and intellectual property reasons, the discovery and characterisation of polymorphic systems is an integral aspect of the development process of any solid-formulated drug product. Yet, these studies are often hindered by crystal quality and size, poor yields and the generation of mixtures of phases. READ MORE
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3. Receptivity, Stability and Sensitivity analysis of two- and three-dimensional flows
Abstract : This work deals with various aspects of boundary-layer stability. Modal and non-modal approaches are first used in the study of the global stability of a jet in crossflow. READ MORE
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4. Modeling and optimization of least-cost corridors
Abstract : Given a grid of cells, each having a value indicating its cost per unit area, a variant of the least-cost path problem is to find a corridor of a specified width connecting two termini such that its cost-weighted area is minimized. A computationally efficient method exists for finding such corridors, but as is the case with conventional raster-based least-cost paths, their incremental orientations are limited to a fixed number of (typically eight orthogonal and diagonal) directions, and therefore, regardless of the grid resolution, they tend to deviate from those conceivable on the Euclidean plane. READ MORE
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5. Kinematics of the heart : strain and strain-rate using time-resolved three-dimensional phase contrast MRI
Abstract : During the cardiac cycle, the myocardium (heart muscle) undergoes large elastic deformations as a consequence of the active muscle contraction along the muscle :fibers and their relaxation, respectively. A four-dimensional (4D) description (three spatial dimensions + time) of the kinematics of the myocardium would bring increased understanding of the mechanical properties of the heart and may be of interest in assessing regional myocardial function. READ MORE