Pointwise Short Course to Be Advanced Structured Gridding

FORT WORTH, TX (Sep 2 2014) — Advanced Structured Gridding will be the topic of the short course presented during the Pointwise User Group Meeting 2014 in Anaheim, California. The course, chosen by a vote of Pointwise users, will be on 29 October and will highlight methodology for quickly conceptualizing and building complex structured grids. Hexahedral structured grids are widely considered optimal for precise computational fluid dynamics (CFD) calculations. However, realistic geometries often contain configurations not conducive to easily-visualized, straightforward multi-block approaches. The techniques taught in the short course will include

  • Creating structured topologies for non-rectangular shapes
  • Generating boundary layer-resolved grids using hyperbolic extrusion
  • Improving cell quality using the elliptic domain and block solvers
  • Creating structured surface grids well suited for use with T-Rex (anisotropic tetrahedral extrusion)

In addition to the short course, there will be four additional sessions held during the user group meeting 29-30 October:

Overset Meshing Introduction

Overset Meshing Introduction outlines the concepts of overset meshing and the basic process of overset grid assembly using Pointwise. New overset meshing tutorials will be provided for hands-on learning.

  • Advantages of overset meshing
  • Overset terminology
  • Topology considerations
  • Do’s and don’ts

Overset Assembly and Diagnostic Tools

This session will consist of a detailed discussion of meshing tools and the advanced visualization capability offered by Pointwise for viewing all of the characteristics of an assembled overset grid system, such as fringe points, orphans, etc.

  • Software requirements
  • Assembly attributes
  • Local and remote assembly
  • Possible assembly errors
  • Examine overset tools and options

Pointwise’s Latest New Features

Instruction in Pointwise’s Latest New Features will include many new productivity enhancements. There will be demonstrations of these features and opportunities to try them in hands-on exercises.

  • Automated unstructured block assembly
  • Align View to Surface
  • Improved and updated CAD file readers
  • Drawing Guide
  • Enhanced connector projections
  • Save Selection As
  • Save Environment
  • Mirror on Export
  • New and upgraded CAE solvers
  • Shading Light Source Control

Prism and Hexahedral T-Rex Meshing

Pointwise’s T-Rex technique has been extended to quickly make layers of high-quality unstructured hexahedral cells with automatic adjacent layer collision detection, quality checking, and anisotropic-to-isotropic transitioning. The Prism and Hexahedral T-Rex Meshing session will demonstrate how to create T-Rex boundary layer meshes containing both prisms and hexahedral cells and how to match T-Rex blocks with adjacent structured blocks to form a truly hybrid mesh. 

  • Creating structured domains for T-Rex
  • Using structured Match domains
  • Applying optimal T-Rex settings
  • Combining T-Rex cells into prisms and hexahedra

Pointwise, Inc. is solving the top problem facing engineering analysts today – mesh generation for computational fluid dynamics (CFD). The company’s Pointwise software generates structured, unstructured and hybrid meshes; interfaces with CFD solvers, such as ANSYS FLUENT, STAR-CCM+, ANSYS CFX and OpenFOAM 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 and T-Rex are trademarks of Pointwise, Inc. All other trademarks are property of their respective owner.

A comparison of simple (lower) and more complex (upper) structured grid topologies for a shell-and-tube heat exchanger shows better boundary layer resolution (by using hyperbolic extrusions) and fewer low-quality cells (as demonstrated with the maximum included angle) with the addition of smoothed, non-rectangular topologies in the upper grid. The Advanced Structured Gridding short course will highlight methodologies for creating more complex structured grid topologies for non-rectangular geometries such as this shell-and-tube heat exchanger.

Jan Batts  
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