This paper presents methods and applications of sheet insertion in a hexahedral mesh. A hexahedral sheet is dual to a layer of hexahedra in a hexahedral mesh. Because of symmetries within a ...hexahedral element, every hexahedral mesh can be viewed as a collection of these sheets. It is possible to insert new sheets into an existing mesh, and these new sheets can be used to define new mesh boundaries, refine the mesh, or in some cases can be used to improve quality in an existing mesh. Sheet insertion has a broad range of possible applications including mesh generation, boundary refinement, R-adaptivity and joining existing meshes. Examples of each of these applications are demonstrated.
The Immersive Topology Environment for Meshing (ITEM) is a wizard-like environment, built on top of the CUBIT Geometry and Meshing Toolkit. ITEM is focused on three main objectives: 1) guiding the ...user through the simulation model preparation workflow; 2) providing the user with intelligent options based upon the current state of the model; and 3) where appropriate, automating as much of the process as possible. To accomplish this, a diagnostic-solution approach is taken. Based upon diagnostics of the current state of the model, specific solutions for a variety of common tasks are provided to the user. Some of these tasks include geometry simplification, small feature suppression, resolution of misaligned assembly parts, decomposition for hex meshing, and source and target selection for sweeping. The user may scroll through a list of intelligent solutions for a specific diagnostic and entity, view a graphical preview of each solution and quickly perform the solution to resolve the problem. In many cases, automatic solutions for these tasks can be generated and executed if the user chooses. This paper will discuss the various diagnostics and geometric reasoning algorithms and approaches taken by ITEM to determine solutions for preparing an analysis model.
MY PORTFOLIO Aitken, Lucy
Campaign,
09/2004
Trade Publication Article
In 1999, together with Warren Hamilton, Johnnie Burn set up the hugely successful sound design studio Wave. Music, stemming from his love of DJing, is crucial to Burn's projects. He has worked on ...Madonna's Music video, BBC Radio 1's "sound-clash" ad and won two BTAA craft awards for sound design on Kiss FM's "music is life" and for Xbox's "mosquito."
Our electrical world is changing. The journey we are on today parallels the era of Edison, Tesla, and Westinghouse in the early race for electrification. Change abounds: energy from nature, ...inverter-based technology, smart and smarter grids; decentralized power, and intercontinental interconnection. This new age of energy offers new choices and challenges, all heavily influenced by the practices that evolved over the past century and institutionalized in standards, interconnection requirements, grid codes, and technical regulatory policies. These standards drove the development of the electrical world, and now they play an important role in its transformation. We explore here the rapidly evolving standards world, one that is both the product of unprecedented technology and an environment for enabling even more technological advancements.
PDF
