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Title: Finite Element Results Visualization for Unstructured Grids

Abstract

GRIZ is a general-purpose post-processing application supporting interactive visualization of finite element analysis results on unstructured grids. In addition to basic pseudocolor renderings of state variables over the mesh surface, GRIZ provides modern visualization techniques such as isocontours and isosurfaces, cutting planes, vector field display, and particle traces. GRIZ accepts both command-line and mouse-driven input, and is portable to virtually any UNIX platform which provides Motif and OpenGl libraries.

Authors:
;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
DOE/ER
OSTI Identifier:
1230354
Report Number(s):
GRIZ*; 001107MLTPL00
DOE Contract Number:
P
Resource Type:
Software
Software Revision:
00
Software Package Number:
001107
Software Package Contents:
Media Directory; Software Abstract; Installation Guides for SUN, and IBM; Media Includes Source Code, Compilation Instructions, Linking Instructions, User Guide; 1 CD ROM
Software CPU:
MLTPL
Open Source:
No
Source Code Available:
Yes
Other Software Info:
Requires Motif and OpenGL libraries. The DIGLIB code is included with the package.
Related Software:
Supersedes TAURUS finite element post-processor. Input files created in TAURUS Plotfile Format by finite element analysis codes DYNA, NIKE, and TOPAZ.
Country of Publication:
United States

Citation Formats

Speck, Douglas E., and Dovey, Donald J. Finite Element Results Visualization for Unstructured Grids. Computer software. Vers. 00. DOE/ER. 15 Jul. 1996. Web.
Speck, Douglas E., & Dovey, Donald J. (1996, July 15). Finite Element Results Visualization for Unstructured Grids (Version 00) [Computer software].
Speck, Douglas E., and Dovey, Donald J. Finite Element Results Visualization for Unstructured Grids. Computer software. Version 00. July 15, 1996.
@misc{osti_1230354,
title = {Finite Element Results Visualization for Unstructured Grids, Version 00},
author = {Speck, Douglas E. and Dovey, Donald J.},
abstractNote = {GRIZ is a general-purpose post-processing application supporting interactive visualization of finite element analysis results on unstructured grids. In addition to basic pseudocolor renderings of state variables over the mesh surface, GRIZ provides modern visualization techniques such as isocontours and isosurfaces, cutting planes, vector field display, and particle traces. GRIZ accepts both command-line and mouse-driven input, and is portable to virtually any UNIX platform which provides Motif and OpenGl libraries.},
doi = {},
year = 1996,
month = 7,
note =
}

Software:
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  • GRIZ is a general-purpose post-processing application supporting interactive visualization of finite element analysis results on unstructured grids. In addition to basic pseudocolor renderings of state variables over the mesh surface, GRIZ provides modern visualization techniques such as isocontours and isosurfaces, cutting planes, vector field display, and particle traces. GRIZ accepts both command-line and mouse-driven input, and is portable to virtually any UNIX platform which provides Motif and OpenGl libraries.
  • GRIZ supports interactive visualization of finite element analysis results on unstructured grids. GRIZ is a general-purpose post-processing application which is designed to work with a variety of an analysis codes. Currently, GRIZ is capable of calculating and displaying derived variables for the DYNA3D, NIKE3D and TOPAZ3D analysis codes. GRIZ reads in data files in the ``MDG plotfile`` format. GRIZ provides support for modern 3D visualization techniques such as isosurface display, cutting planes and display of vector data. GRIZ also incorporates the ability to animate data over time and to store animation frames to a video disk. GRIZ is designed tomore » utilize the capabilities of modern graphics workstations which provide hardware support for 3D graphics, thereby giving the user as much interactive performance as possible. This should make it easier for analysts to explore and interrogate their analysis results.« less
  • Three-dimensional transient finite element analysis is performed on unstructured grids. A trend toward running larger analysis problems, combined with a desire for interactive animation of analysis results, demands efficient visualization techniques. This paper discusses a set of data structures and algorithms for visualizing transient analysis results on unstructured grids and introduces some modifications in order to better support large grids. In particular, an element grouping approach is used to reduce the amount of memory needed for external surface determination and to speed up ``point in element`` tests. The techniques described lend themselves to visualization of analyses carried out in parallelmore » on a massively parallel computer (MPC).« less
  • Traditional techniques for computing electromagnetic solutions in the time domain rely on finite differences. These so-called FDTD (finite-difference time-domain) methods are usually defined only on regular lattices of points and can be too restrictive for geometrically demanding problems. Great geometric flexibility can be achieved by abandoning the regular latticework of sample points and adopting an unstructured grid. An unstructured grid allows one to place the grid points anywhere one chooses, so that curved boundaries can be fit with ease and local regions in which the field gradients are steep can be selectively resolved with a fine mesh. In this papermore » we present a technique for solving Maxwell's equations on an unstructured grid based on the Taylor-Galerkin finite-element method. We present several numerical examples which reveal the fundamental accuracy and adaptability of the method. Although our examples are in two dimensions, the techniques and results generalize readily to 3D. 31 refs., 12 figs.« less

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