CFD Review  
Serving the CFD Community with News, Articles, and Discussion
CFD Review

User Preferences
Site Sponsorship
Headline Feeds
Mobile Edition
Privacy Policy
Terms of Service

Submit a CFD Story

Site Sponsors
Siemens PLM Software
The Choice for CFD Meshing
CFD Review

Tell a Friend
Help this site to grow by sending a friend an invitation to visit this site.

CFD News by Email
Did you know that you can get today's CFD Review headlines mailed to your inbox? Just log in and select Email Headlines Each Night on your User Preferences page.

Bigger, Better Hybrid Meshes with New Gridgen Release
Posted Fri June 19, 2009 @05:44PM
Print version Email story Tweet story
News Pointwise announces the latest release of its Gridgen software featuring new techniques for generating larger and higher quality hybrid meshes for computational fluid dynamics (CFD).

Gridgen’s anisotropic tetrahedral extrusion (T-Rex™) generates a mesh characterized by layers of high quality, high aspect ratio tetrahedra in the near-wall region for boundary layer resolution and an isotropic tetrahedral mesh in the farfield.

Sponsor CFD Review

Because mesh cell quality directly impacts CFD solution quality, it is vitally important that the highly automated T-Rex method generate the best possible mesh. In particular, this new Gridgen release reduces the occurrence of highly skewed mesh cells in concave regions (such as wing-fuselage junctions) and also in convex regions (the trailing edges of control surfaces, for example).

This version also features significant improvements in providing a smooth blending of the mesh from the viscous to inviscid regions of the flow (i.e. the anisotropic to isotropic transition).

“Shortly after the beginning of the year and in close cooperation with one of our major customers, we laid out a plan to improve the quality of Gridgen’s T-Rex meshes while enabling generation of the large meshes typically required for high-fidelity, full aircraft simulations,” said Dr. John Steinbrenner, Pointwise’s vice president for research and development.

Large meshes for CFD simulations of complex, complete aircraft including stores and appendages are easier to generate with the latest Gridgen release.

"Through a focused development effort, we have been able to achieve both goals well ahead of schedule, thereby enabling our many customers requiring boundary layer meshes to benefit immediately from this new technology."

Mesh skewness reduction techniques include vertex decimation and step size attenuation in concave regions and addition of extrusion points in convex regions. Aniso- to isotropic transition was improved through vertex refinement, enhanced handling of colliding extrusion fronts and seeding the isotropic mesh with points generated by the extrusion algorithm.

The new release of Gridgen, Version 15.14, also updates the Native CAD Readers to support CAD files from NX 6 and CATIA V5 R19 and adds support for 64-bit Linux.

Pointwise, Inc. is solving the top problem facing engineering analysts today – mesh generation for computational fluid dynamics. The company’s Gridgen and Pointwise software generates structured, unstructured and hybrid meshes; interfaces with CFD solvers, such as FLUENT, STAR-CD and ANSYS CFX, as well as many neutral formats, such as CGNS; runs on Windows (Intel and AMD), Linux (Intel and AMD), Mac and Unix, and has scripting languages that can automate CFD meshing. Large manufacturing firms and research organizations worldwide rely on Pointwise as their complete CFD preprocessing solution. More information about Gridgen and Pointwise is available at or by calling 800-4PTWISE.

Pointwise and Gridgen are registered trademarks and Pointwise Glyph and Gridgen Glyph are trademarks of Pointwise, Inc. All other trademarks are property of their respective owner.

[ Post Comment ]

Short-Term Course on CFD | ANSYS ICEM CFD 12.0 Update  >


CFD Review Login
User name:


Create an Account

Related Links
  • CD-adapco
  • Fluent
  • Gridgen
  • Intel
  • Linux
  • Pointwise
  • More on News
  • Also by nwyman
  • This discussion has been archived. No new comments can be posted.

    Q: "What is the burning question on the mind of every dyslexic existentialist?" A: "Is there a dog?" All content except comments
    ©2018, Viable Computing.

    [ home | submit story | search | polls | faq | preferences | privacy | terms of service | rss  ]