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The Connector, the newsletter for CFD Mesh Generation from Pointwise

March 2012 - New Product Release

Pointwise Version 17

Pointwise Version 17 now is available for production use. This major release includes more than two dozen new features. The two most notable new features are the volume mesh implementation of the T-Rex hybrid meshing technique and the ability to read native CAD files.

You can rapidly come up to speed on this latest release of our meshing software by participating in an upcoming three-part webinar series. Keep reading for information about the webinars.

An Advanced Implementation of T-Rex

Pointwise's implementation of T-Rex (anisotropic tetrahedral extrusion) for hybrid mesh generation has advanced beyond what you may be used to from Gridgen. Of course, the T-Rex technique still is a highly automated method for generating a mesh that resolves boundary layers, wakes, and other phenomena in viscous flows. The technique extrudes layers of high quality (right angle included) tetrahedra from a wall or other boundary while optimizing the mesh's quality and avoiding collisions with other extruding layers. An optional post-processing step reduces cell count significantly by combining the layers of tets into layers of prisms. The key differentiator from Gridgen's T-Rex is a feature called “Push Attributes” that automatically enforces consistency of the volume and surface meshes, something Gridgen users have to perform manually.

mesh around a race car

Figure 1: T-Rex in Pointwise was used to generate this hybrid mesh for a race car. +

Native CAD Readers

Native CAD readers for ACIS, CATIA V4, CATIA V5, NX, Parasolid, Pro/ENGINEER, SolidWorks, and STEP are bundled with every Pointwise license. These readers do not require a license of the CAD software to work and give you a direct path from CAD software to Pointwise, rather than using IGES as an intermediate step.

CAD models imported from various native formats

Figure 2: A piston was imported from several native CAD formats. +

Productivity Features

Pointwise Version 17 contains many other great features that cover the gamut from meshing tools to convenience features. Here's a partial list in no particular order.

  • The layer manager now lets you select a layer and have all its entities added to the current selection.
  • Pointwise now supports the creation of baffles in volume grids for representing thin surfaces and adding grid clustering control.
  • A grid spacing value can be copied from one location and pasted onto one or more other locations.
  • The Diagonalize command now includes options for Hiding or Deleting the original structured domain.
  • Graphics now can optionally be drawn in double precision in order to accurately zoom in on small features.
  • When journaling an interactive session to a file, the script commands also will appear in the Messages window.
  • The Examine U,V diagnostic provides the ability to query database entity parametric coordinates by using the Probe feature.
  • The Group command provides an additional organizational tool and selection capability besides Layers. You are able to Create, Edit, and Ungroup sets of entities of the same type. Groups can be used as families for CAE solvers that support this information.
  • The software installer has been upgraded to be consistent across all platforms and the license manager now uses a web-based dashboard.
  • Spacing constraints now are included in the List for tabular selection, setting and sorting.
  • Database boundaries now can be used for the creation of offset curves.
  • Generation of pyramid cells on quad domains used in an unstructured block's face now uses an algorithm similar to T-Rex in order to prevent pyramid crossing in concave regions.
  • Re-extrude provides a way to re-extrude previously extruded structured domains and prism and hexahedral blocks. It can be applied to single or multiple domains or blocks.
  • SubGrids allows the user to apply the structured grid solvers to subsets of a domain's or block's grid points. It allows very focused application of the solver on problem areas without effecting the rest of the grid and is, therefore, quite a bit faster to apply.
Spacing constraints can be set via the List

Figure 3: Spacing constraints are available in the list for selecting, sorting, and setting. +

Special Webinar Series Introducing the Latest Meshing Productivity Enhancements in Pointwise

One webinar wouldn't be enough to show you all these new features. That's why we're hosting a series of three webinars to introduce the new capabilities in Pointwise Version 17.

Getting Started with Pointwise

28 March at 11:00 a.m. CDT

If you haven't used Pointwise before or you are a Gridgen user, this webinar will familiarize you with Pointwise's meshing terminology, the user interface, and the general meshing process. We'll even point you to where you can get more information and training materials.

More information is available on the Getting Started with Pointwise webinar page.

Unstructured Viscous Boundary Layer Meshing: T-Rex

4 April at 11:00 a.m. CDT

For the complex geometries encountered in modern analyses, creating boundary layer resolved meshes can be tedious and error prone, often leaving the engineer with less than satisfactory meshes. Pointwise's anisotropic tetrahedral extrusion method, aka T-Rex, is a robust and highly automated method for creating unstructured boundary layer meshes on complex geometries.

More information is available on the Unstructured Viscous Boundary Layer Meshing: T-Rex webinar page.

What's New in Pointwise

11 April at 11:00 a.m. CDT

Pointwise is functionally equivalent to our legacy software, Gridgen. However, Pointwise contains many new capabilities that Gridgen does not. This webinar highlights the major new features that make Pointwise our next generation mesher.

More information is available on the What's New in Pointwise webinar page.

Register Today for All Three Webinars

Register today for all three webinars to ensure you get the most out of this new software release.

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