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Overset Grid Assembly in Latest Pointwise Release
Posted Wed February 18, 2015 @12:01PM
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News Pointwise announces the latest release of its computational fluid dynamics (CFD) meshing software featuring direct integration with overset grid assembly (OGA) software.

Overset gridding is a technique that avoids the topological complexity of generating abutting, point-to-point connected, multi-block grids by allowing the component grid blocks to overlap.


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"The integration of grid generation and overset grid assembly represents a vast improvement over the hodge-podge of disparate tools typically employed by practitioners of overset CFD," said Nick Wyman, Pointwise director of applied research.

"What we are releasing today for production use is the result of a multi-year research effort Pointwise conducted with funding from the U.S. Air Force’s Arnold Engineering Development Complex, Air Force Materiel Command. That research was followed by a full year of fine-tuning in preparation for release to all our customers."

The price paid for that flexibility of overset gridding is the need to ensure a sufficient degree of overlap so the CFD solver can accurately share data between the component grids. The overlap is computed using overset grid assembly software. Users of OGA software typically rely on a circuitous collection of home-grown tools that are patched together. By integrating OGA (in the form of the PEGASUS and Suggar++ software packages) with Pointwise, the entire process is made more efficient.

overset mesh
The new overset Examine diagnostic shows fringe/donor volume ratio in this example of an aircraft wing.

“Pointwise has been a proud, long-time sponsor of and participant in the bi-annual Overset Grid Symposium,” said John Chawner, Pointwise’s president. “This release of Pointwise helps us continue our integral relationship with that community.”

Other features in Pointwise Version 17.3 R1 include improved support for PLOT3D, ANSYS Fluent®, STL, and NX files, a more robust T-Rex, anisotropic tetrahedral extrusion, hybrid mesher, and several user experience enhancements.

Pointwise, Inc. is solving the top problem facing computational fluid dynamics (CFD) today – reliably generating high-fidelity meshes. The company’s Pointwise software generates structured, unstructured and hybrid meshes; interfaces with CFD solvers, such as ANSYS FLUENT, STAR-CCM+, ANSYS CFX, OpenFOAM, and SU2 as well as many neutral formats, such as CGNS; runs on Windows (Intel and AMD), Linux (Intel and AMD), and Mac, and has a scripting language, Glyph, that can automate CFD meshing. Large manufacturing firms and research organizations worldwide rely on Pointwise as their complete CFD preprocessing solution.

Pointwise is a registered trademark and Pointwise Glyph, T-Rex and Let’s Talk Meshing are trademarks of Pointwise, Inc. All other trademarks are property of their respective owner.

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