Let's Talk Meshing

Let's Talk Meshing Events

Pointwise's Let's Talk Meshing interactive forums encourage discussion about various mesh generation topics through webinars, webcasts, and live events. We will apply Pointwise to solve a real-world problem or demonstrate a novel technique to accomplish a meshing task and then you will have the opportunity to ask questions and comment about what you saw.

The Influence of Meshing Strategies on Simulation Efficiency

The Influence of Meshing Strategies on Simulation Efficiency

Watch this on-demand webinar that will help you determine the best type of mesh to use for the fastest and most accurate CFD simulations.

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Pointwise Meshing Technology Conference Germany

Pointwise Meshing Technology Conference

At this conference we discussed the technology behind Pointwise and the best ways to use them to produce meshes for CFD simulations.

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Efficient Meshing with Pointwise

Efficient Meshing with Pointwise

See how Pointwise increases the accuracy, speed, and reliability of CFD analysis. Learn how others use Pointwise for demanding CFD applications.

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Towards Mesh Adaptation with Pointwise

Towards Mesh Adaptation with Pointwise

This webinar introduces a feature currently in development for mesh adaptation. It accepts from the flow solver a point cloud on which target cell sizes are specified. This point cloud is used as a clustering source in Pointwise to adapt both the volume and surface meshes.

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Multi-block Structured Meshing of a Diffusing

Multi-block Structured Meshing of a Diffusing S–Duct

This video demonstrates the generation of structured, multi-block grids for a serpentine inlet duct including cells of exceptionally high quality in the near-wall region. Use of PDE-based techniques, both elliptical and hyperbolic, are described.

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Big Wave Surfboard Optimization Using Pointwise & CRUNCH CFD

When surfing 80-100 foot tall waves, a surfer can reach speeds as high as 50 mph. Optimization of the surfboard’s aerodynamics can contribute to stability and safety. A CFD framework featuring Pointwise’s automated meshing allowed 100 designs to be explored.

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Glyph Scripting with Python in Pointwise

Glyph Scripting with Python in Pointwise

In this video, we demonstrate how to configure the Glyph Server in Pointwise and add support for scripting languages including Python. We will also introduce example Python scripts that highlight the utility and value of these new Glyph features.

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A hybrid boundary layer resolved volume mesh generated from a quad-dominant surface mesh and T-Rex results in a predominantly flow-aligned hexahedral near-body grid.

Unstructured Quad & Hex Meshing Using Pointwise

Pointwise’s quad-dominant surface meshing and hexahedral boundary layer volume meshing generate smaller meshes in a highly automated manner. When combined with sources for off-body clustering, a fully-resolved viscous mesh can be generated relatively quickly.

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Pointwise provides users several tools to help identify potential problems with imported CAD, and repair these issues either on the geometry itself or by healing grid entities.

Mastering Geometry Cleanup Tasks in Pointwise

This video provides an overview of Pointwise’s suite of tools for creating a meshing-ready geometry model. Included are geometry model import, tolerance verification and setting, techniques for healing gaps between surfaces, recreating missing geometry, and more.

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Various meshed components of the DrivAer benchmark model.

Localized Remeshing Strategies for Parametric Models in Pointwise

This video demonstrates the flexibility you will gain from Pointwise’s ability to limit remeshing to regions where geometry changes during your design cycle. Included are techniques for remeshing on geometry model import, merging adjacent meshes, and more.

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Talking CFD Live

Talking CFD Live

A live Q&A / roundtable session to round out the first season of the Talking CFD podcast.

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Hybrid volume mesh generated for the vehicle using Pointwise’s T-Rex algorithm

The Stanford Solar Car Project's Race for Aerodynamic Efficiency

The Stanford Solar Car Project team developed a repeatable, simulation driven design framework consisting of Pointwise for rapid hybrid grid generation, SU2 to run the CFD simulations, and Tecplot 360 EX to post-process and interpret the results.

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Talking CFD, EP06 - John Chawner - Pointwise

Talking CFD, EP06 - John Chawner - Pointwise

In this podcast John Chawner, President & Co-Founder of Pointwise, joins Talking CFD to discuss what it takes to build a CFD business with longevity.

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Resulting adapted mesh and pressure coefficient (Cp) contours for flow around an ONERA M6 wing.

Meshing Considerations for Adjoint-based Mesh Adaptation

This video demonstrates best practices in Pointwise for adjoint-based, hybrid mesh adaptation using NASA Langley's FUN3D CFD solver to accurately compute the flow over an ONERA M6 wing.

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Automobile overset mesh solution using Pointwise, Suggar++ and Caelus.

Overset Grid Generation and CFD using Pointwise, Suggar++, and Caelus

This video demonstrates the process of generating overlapping grids, setting up and executing Suggar++, and exporting the domain connectivity information all from within Pointwise. We demonstrate an overset flow simulation using the Caelus CFD solver.

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Glyph scripting offers the ability to automate all or part of the CFD meshing process within Pointwise

Getting Started with Glyph Scripting

By watching this video, you will uncover the power of Pointwise’s Glyph scripting language. We will introduce the language’s syntax, share our best practices, and provide reference materials. The entire process will be demonstrated as we write a script.

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Modified T-Rex parameters resulted in an improvement in the tetrahedral gap mesh

Using T-Rex to Generate Unstructured Hexahedra for an Automotive Intake

Discover how to create unstructured hexahedra quickly on complex geometry using T-Rex (anisotropic tetrahedral extrusion). Best practices for the generation of both surface and volume meshes and troubleshooting techniques are shown.

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High quality viscous layer blocks can be extruded while constraining the boundaries to the hub and shroud.

Strategies for Multiblock Structured Meshing of Turbine Blades

Learn the skills and techniques to efficiently create multi-block structured grids for turbine blades from start to finish. This video includes discussions about which topologies work best and how to create them as well as how to avoid common problems.

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Using OpenVSP and Glyph Scripting in Pointwise enables engineers to more readily run high fidelity experimental design and parametric trade studies during conceptual design.

Using Automated Meshing for Analysis in Conceptual Design

In this video we demonstrate how Pointwise's scripting environment, Glyph, can be used to automate creation of viscous, anisotropic meshes suitable for high fidelity analysis such as computational fluid dynamics (CFD) and finite element analysis (FEA) using a parametric generic transport aircraft model exported from OpenVSP.

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High Order CFD Technologies

High Order CFD Technologies

by The Centre for Modelling and Simulation

Hear about the development and industrialisation of HO CFD methods, gaining an appreciation of the current state of the art - as well as a view on the future capability. High-order CFD techniques are attracting considerable research interest, as they offer the potential for significantly more accurate fluid dynamics simulation - particularly in the age of many-core processors (such as GPUs).

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Hybrid volume mesh generated for the full DrivAer model using Pointwise's T-Rex with cells colored by volume.

Automotive Design Optimization using Pointwise, Sculptor, and OpenFOAM

Using the DrivAer mesh, we define a set of volumetric shape deformations using few design variables within Sculptor. A technology called Arbitrary Shape Deformation is used to smoothly morph the nodes of the mesh that are inside of the volumetric deformation space. Even for large deformations, this technology can maintain surface boundary layer thickness and orientation.

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This grid showcases our new ability to extrude from wingtips with poles.

Grid Extrusions & Boundary Conditions: What's New?

The latest Pointwise release has several new features. Among these are updates to extrusions and extrusion boundary conditions. The boundary conditions, in particular, are now more similar to NASA's HYPGEN code.

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Plugins integrate with the Pointwise user interface to export CAE files.

An Introduction to Pointwise Plugin Development

In this Let's Talk Meshing webcast, we present an introduction to writing a Pointwise plugin using the CAE plugin software development kit (SDK). The SDK is an application programming interface (API) that you can use to program Pointwise to export your mesh to your solver-specific format.

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A watertight hybrid surface mesh was created consisting of both structured and unstructured domains.

Land-Speed Record Attempt Uses High-Fidelity, High-Speed CFD

In this Let's Talk Meshing webcast, we present an introduction to writing a Pointwise plugin using the CAE plugin software development kit (SDK). The SDK is an application programming interface (API) that you can use to program Pointwise to export your mesh to your solver-specific format.

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

Overset Tools and Other New Features in Pointwise V17.3

Join us as we demonstrate and discuss the new features available in Pointwise Version 17.3. You will learn about the new overset grid assembly tools and other new features like the Examine in Solve command. This webinar will demonstrate how you can make your meshing experience much more efficient using all the new tools in this latest release of the software.

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Creating a script in Pointwise can be a quick process with the right approach.

Introduction to Scripting in Pointwise

In this video, we present a basic introduction to scripting in Pointwise and lay the framework for customization of the meshing process through scripts. Scripting in Pointwise is accomplished with Glyph, an extension of Tcl.

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Generating structured grid topologies for non-rectangular geometries such as this fillet can be expedited through the use of utility scripts and other tools in Pointwise.

Advanced Structured Grid Techniques

This video focuses on techniques for creating structured hexahedral grids with Pointwise. The relative merits of hexahedral versus tetrahedral elements on cell-centered finite volume simulations will be discussed, with special attention given to the sources and mitigation of numerical diffusion.

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Generating structured grid topologies for non-rectangular geometries such as this fillet can be expedited through the use of utility scripts and other tools in Pointwise.

SU2-Pointwise Joint Workshop

Pointwise and the SU2 team at Stanford University hosted a joint workshop that walked attendees through the end-to-end CFD process using Pointwise and Stanford's open source CFD code, SU2.

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This image, a CFD solution of the DrivAer model developed by the Institute of Aerodynamics and Fluid Mechanics at Technische Universität München, was created using Pointwise, OpenFOAM® and ParaView.

The State of Simulation: It's a Wonderful Time to be Using CFD

by ENGINEERING.com

John Chawner, president of Pointwise, will discuss the current state of computational fluid dynamics (CFD) during an ENGINEERING.com webinar on 16 September.

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From back to front: fully structured (hexahedral), unstructured with extruded hexahedral boundary layer, and unstructured with extruded prismatic boundary layer.

Mesh Topology Influence on Volute Aerodynamic Performance Computed Using Code Leo

In this webinar, we evaluate a generic volute design. Simulations were performed using Code Leo, a computational fluid dynamics (CFD) solver developed by AeroDynamic Solutions (ADS), on three different grid types generated with Pointwise: multi-block structured, unstructured with a hexahedral boundary layer, and unstructured with a prismatic boundary layer.

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From back to front: fully structured (hexahedral), unstructured with extruded hexahedral boundary layer, and unstructured with extruded prismatic boundary layer.

Tips for Handling Complex Geometries, Very Large Grids

This video steps you through the meshing process for creating an unstructured grid around a moderately complex geometry. We pay particular attention to solid modeling, uses for scripting, local grid refinement, and creating orthogonal cells in the boundary layers.

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An unstructured mesh containing hexahedra, prisms, and tetrahedra generated by T-Rex. Image created with EnSight.

Introducing Unstructured Hexahedral Extrusion in Pointwise V17.2

See how Pointwise V17.2 will help you quickly generate unstructured hexahedral boundary layer meshes using T-Rex (anisotropic tetrahedral extrusion).

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CFD solution computed using SU2 captures high resolution shock structures present on the surface of the aircraft and propagating well into the farfield.

Supersonic Aircraft Shape Design Powered by SU2 and Pointwise

This webinar details how Pointwise and SU2 can be used to tackle supersonic aircraft design. Watertight surface and volume meshes for complex geometries can be quickly generated in Pointwise and exported to the native SU2 format.

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Structured Grid for an Aneurysm

Structured Grid for an Aneurysm

As part of the CFD Challenge hosted by Dr. Gabor Janiga at the Otto von Guericke University Magdeburg, two aneurysm geometries were provided and participants were encouraged to use CFD tools to predict which of the two models had a higher probability of rupture. In this video, we will demonstrate how to create a multiblock structured volume mesh for one of the aneurysm geometries.

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OpenFOAM MRF Solution for the Baffled Mixing Tank.

Estimating the Power Requirement of a Rushton Turbine Using Pointwise and OpenFOAM®

Mixing tanks are heavily used in process industries where high-speed agitation and rapid mixing are necessary. While impeller-stirred tanks promote efficient mixing, the highly three-dimensional flows pose several meshing and simulation challenges. We will address these challenges using a generic, baffled tank stirred by a Rushton turbine.

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New Examine controls allow you to set cut plane increments and range.

Learn About the Newest Capabilities in Pointwise

With the recent release of Pointwise V17.1 R4, it is a good time to show off the latest additions. In this webinar we will demonstrate features such as the latest CAE solver additions, the capability to easily delete multiple control points at once from a connector, a new block elliptic solver boundary condition, and many more.

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Hybrid meshing coupled with complex multi-phase cavitation models and interactive post-processing allows CRAFT Tech to accurately predict the performance of a high energy water injection pump.

CFD Analysis of Cavitation and Acoustics of a High Energy Water Injection Pump

Combustion Research and Flow Technology (CRAFT Tech) utilizes the best CAE tools available to help investigate and understand the complex cavitation phenomena occurring in high energy water injection pumps. The complex geometry and physics of the problem make it a challenge to predict the unsteady interactions between the various components of the pump and the potential for cavitation in the impeller.

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The Grid Merge command can be used to find and repair topology issues.

Meshing Forensics II: Overcoming Common Structured Gridding Pitfalls

Our last meshing forensics webinar focused on issues typically encountered when working with solid models and unstructured meshes. This webinar focuses on road blocks commonly seen when working on structured grids. Topological requirements of structured grids and loose CAD tolerances can cause missteps in the gridding process.

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Examining the quality of an unstructured block.

Meshing Forensics: How to Recover When Things Go Wrong

Based on the popularity of this topic as our special short course at the just completed Pointwise User Group Meeting, Meshing Forensics is one webinar you won't want to miss. One attendee said this was his favorite training session, adding, “Meshing Forensics was fantastic with quick but essential tips.”

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Advancing front surface mesh on brake assembly.

What's New in Pointwise V17.1

Learn about the exciting new features available in Pointwise Version 17.1. From new CAE solver functionality to an advancing front algorithm for unstructured surface meshes, Pointwise V17.1's new capabilities will help you generate the mesh you need.

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