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 11 of 11 for “"Mesh Deformation"”.
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Elastic Mesh Deformation for Internal Flows with Moving Boundaries
This project aims to study elastic-based mesh deformation for internal flow problems with obstructions. As such a tank with a flexible internal beam serves as the tested case employed in this work. As such a computer code was developed and the elastic deformation was implemented via the Finite …
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Efficient and Effective Algorithms for Controllable Fluid Simulation and Mesh Deformation
In the second part, we focus on mesh deformation algorithms. To avoid expensive numerical solvers using factorization techniques, a fast multigrid algorithm is developed. The key observation here is that reasonable results can be achieved using more accurate restriction/prolongation operators …
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Linear elastic mesh deformation via localized orthotropic material properties optimized by the adjoint method
… proven difficult due to conforming higher-order meshes to curved geometries. If higher-order nodes are not placed on the surface of the geometry error is introduced into the simulated solution. This barrier is largely a non-issue for inviscid meshes where a mid-edge node can be projected onto the …
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Unstructured grid technologies for hydrodynamic applications with bodies in relative motion and mesh deformation
… applications with bodies in relative motion and mesh deformation are presented. A parallel universal mesh deformation scheme is developed to manage deforming surface and volume grids for both aerodynamic and hydrodynamic applications. The approach is universal and independent of grid type. Also, …
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Real-time enveloping with rotational regression
… which an animator controls, to a 3-D surface mesh, which the audience sees. This process is necessary in most computer graphics applications that involve animated characters. The complexity (and speed) of enveloping solutions vary from photo-realistic muscle simulations used for movie …
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Automatic higher order mesh generation and movement utilizing spring-field and vector-adding
… geometry applicable, unstructured curved 2D mesh generation method is developed. Based on this 2D method, an extension to 3D geometries is developed. The methodology of this mesh generation is to provide near-body and off-body meshes by an advancing-layer method to avoid mesh quality problems …
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Investigation Into Flutter of Complex Vane Packs
… a Simplified model. Unsteady CFD with periodic mesh deformation based off of its modal analysis was used to validate if it can predict the flutter velocity as well as understanding what the unsteady aerodynamic response to flutter is. A parameter study was then conducted along with oilflow …
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Constrained parameterization with applications to graphics and image processing.
… is the development of a vector field based deformation algorithm for 2D mesh deformation and image warping. Many presented deformation approaches are used to employ the basis functions (including our proposed RBF-based re-parameterization algorithm here). The main problem is that such …
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Large-eddy simulations of recirculation zones in channel-type molten salt reactors
… and shape of the stringer-tip using Nek5000’s mesh deformation capabilities. To our knowledge, this work is the first effort to apply large-eddy simulations to the MSRE and study the effects of geometry-induced turbulence and recirculation within the MSRE. We analyzed the output data and found …
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Tracking and modelling motion for biomechanical analysis
… to correct the final hand posture. A mesh deformation algorithm is then applied to visualise the movements of the underlying hand skeleton for comparison with the true hand poses. The mathematical framework used for describing and implementing the techniques discussed within this …
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Effective methods for manipulating and rendering skinned meshes
Mesh skinning has been a widely applied method in games for skeleton driven character animation. A gaming character can be easily animated and deformed by transforming every vertex using a weighted sum of proxy bone transformations in the skeleton. Arbitrary deformations such as facial and cloth …