Over the last decade, remarkable progress has been made in the field of endovascular treatment of aneurysms. Technological advances continue to make it possible for a growing number of patients with cerebral aneurysms to be treated with a variety of endovascular strategies, essentially using detachable platinum coils. Yet, coil embolization remains a very complex medical procedure for which car...

This paper describes an adaptive, unstructured mesh generator, which can be used for discretizing regional and global domains for geophysical flow simulations in general, and atmospheric flow simulations in particular. The global mesh generator is a part of the Operational Multiscale Environmental model with Grid Adaptivity (OMEGA) System. For a physically complex and computationally intensive ...

ÆStefan Gumhold, Xinlong Wang & Rob Ma Leod ÆWSI/GRIS University of Tubingen stefan gumhold. om S ienti Computing and Imaging Institute University of Salt Lake City, Utah wangxl s.utah.edu ma leod vrti.utah.edu ABSTRACT This paper des ribes a new method to extra t feature lines dire tly from a surfa e point loud. No surfa e re onstru tion is needed in advan e, only the inexpensive omputation o...

To start, we recall a mesh generation method, allowing to create a so called unit mesh, which is an extension of the classical Delaunay method in the case where the process is governed via an isotropic or an anisotropic control space. Then we introduce a conversion method from a triangular mesh to a quadrilateral mesh. Furthermore, we describe the generalization of this method to adaptive surfa...

A new all-hexahedral meshing algorithm, referred to as “Geode”, is described. This algorithm is the combination of hex/tet plastering, dicing, and a new 26-hex transition element template.The algorithm is described in detail, and examples are given of problems meshed with this algorithm. keywords. Geode; hexahedral mesh generation; transition template.

Nearly Orthogonal Two-Dimensional Grid Generation with Aspect Ratio Control Volkan Akcelik,∗ Branislav Jaramaz,†,‡ and Omar Ghattas∗ ∗Laboratory for Mechanics, Algorithms, and Computing, Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania; †Center for Orthopaedic Research, UPMC Shadyside Hospital, Pittsburgh, Pennsylvania; and ‡Robotics Instit...

A fast, accurate method for solving the Euler equations will be described. A new mesh generation scheme, capable of creating a mesh around winglbodyltail-plane/fin combinations will also be presented. The paper concludes with a proliminary result demonstrating how the Euler method performs for a typical aircraft configuration.

Abatmet-Some basic studies and developments for adaptive procedures in large strain finite element analysis are presented an evaluation of higher-order elements, two pointwise indiitors for errors in stresses, a mesh generator for remeshing on the deformed contiffuration of the body, and a general mapping scheme for transferring solution variables across models. The methods discus4 constitute t...