Applications of Hybrid and Unstructured Meshing

Pointwise’s hybrid mesh generation capabilities, especially the T-Rex technique (anisotropic tetrahedral extrusion), provide a rapid method for meshing complex geometry with boundary layer resolution.

Meshing for Control, Quality, and Automation

You can generate structured multi-block, unstructured, hybrid, and overset meshes for viscous simulations with precise control over point placement and clustering to get the resolution you need. At the same time, Pointwise’s core meshing methods produce cells of high quality to ensure convergence and accuracy in your CFD solution.

Using Pointwise’s Glyph scripting language, you can automate most or all of the mesh generation process by writing macros and templates. And the software’s plug-in SDK gives you the ability to write a mesh exporter customized to your CFD solver. Between Glyph and plug-ins, you can customize the entire meshing process from geometry model import to flow solver export.

Towards Mesh Adaptation with Pointwise

Towards Mesh Adaptation with Pointwise

In this webinar, we introduce adaptation in Pointwise and how this upcoming feature is used to improve upon existing mesh adaptation solutions.

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Report from the 1st AIAA Geometry and Mesh Generation Workshop

Report from the 1st AIAA Geometry and Mesh Generation Workshop

The 1st AIAA Geometry and Mesh Generation Workshop was held in Denver, Colorado on 3-4 June 2017 prior to the AIAA Aviation Forum. The goals of this new workshop were threefold: to assess the current state-of-the-art in geometry preprocessing and mesh generation as applied to aircraft and spacecraft systems, to identify areas of needed improvement, and to develop a foundation for development of best practices.

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Big Wave Surfboard Optimization Using Pointwise and CRUNCH CFD

Big Wave Surfboard Optimization Using Pointwise and CRUNCH CFD

Working with one of the world's top big wave board shapers, engineers at CRAFT Tech have applied computational fluid dynamics (CFD) within a design optimization process, employing a genetic algorithm to evolve the design of a big wave surfboard. In this article, we will explore the design framework that allowed over 100 design iterations to be explored, resulting in a higher speed, lower drag, big wave surfboard design.

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Pointwise Aids in Aerospike Nozzle Analysis

Pointwise Aids in Aerospike Nozzle Analysis

Aerospike rocket nozzles offer increased efficiency over a wider operating pressure range than traditional nozzles. In this study, we compare CFD and experimental predictions of aerospike nozzle thrust for varying pressure ratios and base bleed rates.

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Numerical Investigation of a Pick-and-Place Machine

Numerical Investigation of a Pick-and-Place Machine

Students at KTH Royal Institute of Technology in Sweden investigated the performance of a pick-and-place machine using CFD. Pointwise was used to perform a grid refinement study for a static simulation where the nozzle of the machine as well as the distance to the component varied. Additionally, an overset mesh was generated for a 1-DOF dynamic simulation.

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Mesh Generation for the NASA HL-CRM

Mesh Generation for the NASA HL-CRM

Pointwise is supporting two AIAA workshops (the 3rd High Lift Prediction and the 1st Geometry and Mesh Generation Workshop) to be held prior to AIAA Aviation in June 2017. We generated several type of meshes (unstructured, hybrid, hybrid overset, and high order) for the NASA High Lift Common Research Model that are described here.

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Unstructured Quad & Hex Meshing Using Pointwise

Unstructured Quad & Hex Meshing Using Pointwise

In this webinar, we highlight four new major features available in Pointwise V18: quad-dominant surface meshing, farfield shape creation, unstructured hex-dominant boundary layer meshing, and volumetric sources. Starting with an existing aircraft geometry, we demonstrate the entire meshing process beginning with the generation of a quad-dominant surface mesh.

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The Stanford Solar Car Project’s Race for Aerodynamic Efficiency

The Stanford Solar Car Project’s Race for Aerodynamic Efficiency

Chasing the Sun 3000 km across the Australian Outback is a challenge. And doing it in a solar powered vehicle is an even bigger challenge. But every two years the Stanford Solar Car Project, a student-run organization, arrives in Australia with a new design ready to take on the Bridgestone World Solar Challenge. This article summarizes the simulation driven design framework that enabled the team to analyze over 40 design iterations and improve the aerodynamic efficiency of their 2015 car, Arctan.

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Meshing Overview & S-Duct Results from the 3rd Propulsion Aerodynamics Workshop

Meshing Overview & S-Duct Results from the 3rd Propulsion Aerodynamics Workshop

Pointwise provided a set of standard grids for workshop participants to use at this year's 3rd Propulsion Aerodynamics Workshop in Salt Lake City, Utah. These grids were created using several new features available in Pointwise's upcoming V18 release. An overview of some of these features and the workshop grids is provided. Some initial steady-state results for the S-Duct using these grids and NASA's FUN3D solver are presented.

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North America’s Largest 3-D Printed Structure Started as a Mesh

North America’s Largest 3-D Printed Structure Started as a Mesh

While the folks at Pointwise appreciate the beauty and utility of grids, usually the computational meshes produced by our software are used as an intermediate step in a customer’s engineering analysis process and not as the final goal of the project. However, Branch Technology, with its novel freeform 3-D printing techniques actually turns these meshes into physical structures that can be used as building elements or as seen here, works of art.

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Revisiting Output-Based Mesh Adaptation

Revisiting Output-Based Mesh Adaptation

Mesh adaptation techniques in computational fluid dynamics (CFD) applications have matured substantially over the years, yet still few people seem to be leveraging them to their advantage. In this article, some background on why you should be using mesh adaptation to make sure important flow features are resolved without an inordinately large overall cell count is presented along with an example using Pointwise and NASA's FUN3D solver.

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

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

Mesh adaptation techniques in computational fluid dynamics (CFD) applications have matured substantially over the years, yet still few people seem to be leveraging them to their advantage. In this article, some background on why you should be using mesh adaptation to make sure important flow features are resolved without an inordinately large overall cell count is presented along with an example using Pointwise and NASA's FUN3D solver.

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Using Automated Meshing for Analysis in 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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University of South Florida Races with Pointwise

University of South Florida Races with Pointwise

The University of South Florida's Formula SAE racing team, USF Racing, placed 6th overall out of more than 80 teams competing at the Formula SAE competition in Lincoln, Nebraska in June 2015. It was only the second year we competed in the category. Using Pointwise helped our team to have a successful season. Pointwise's Glyph scripting allowed for multiple simulations providing good performance estimations for our vehicle's aerodynamic package. In turn, this allowed the team the flexibility to tune the car's performance quickly for instant results.

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Integrating OpenVSP and Pointwise for High-Fidelity CAE in Conceptual Design

Integrating OpenVSP and Pointwise for High-Fidelity CAE in Conceptual Design

Pointwise recently attended the OpenVSP Workshop 2015 hosted by NASA Langley and demonstrated Glyph scripting for automated viscous anisotropic meshing of a transport aircraft from OpenVSP. With recently added support in OpenVSP 3 for exporting models as STEP files, users now have an easy way to use an analytical geometry representation in Pointwise. The Glyph script automates the meshing process and provides a recipe for recommended meshing practices that new users can adopt when creating their own meshes in Pointwise.

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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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Automotive Design Optimization using Pointwise, Sculptor, and OpenFOAM®

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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Direct Numerical Simulation of Woodwind Aeroacoustics

Direct Numerical Simulation of Woodwind Aeroacoustics

Researchers at Toyohashi University of Technology in Japan have used detailed DNS calculations of the flow through a recorder to better understand its sound generation mechanisms and give guidance for future instrument designs.

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Garry Rogers Motorsports Continues Racing Success with Pointwise

Garry Rogers Motorsports Continues Racing Success with Pointwise

Garry Rogers Motorsport (GRM) team uses Pointwise to produce detailed, high fidelity CFD meshes for the design and improvement of their V8 supercars, which aided in last year's successful introduction of a new vehicle, the Volvo Polestar S60.

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

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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Large Scale Aircraft Design Using SU2 and Pointwise

Large Scale Aircraft Design Using SU2 and Pointwise

SU2 is an open-source collection of C++ and Python-based software for multi-physics, including computational fluid dynamics (CFD). This article discusses three design cases using SU2 with Pointwise: a transonic aircraft, a supersonic aircraft, and student-designed solar car.

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Unstructured Mesh Generation for Simulation of Airfoil Ice Accretion

Unstructured Mesh Generation for Simulation of Airfoil Ice Accretion

Researchers at Penn State University are using T-Rex anisotropic tetrahedral extrusion in Pointwise to make high-quality, boundary layer-resolved hybrid meshes for CFD analysis of a critical flight safety issue: ice build-up on aircraft structures.

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Turbine Blade Film Cooling Optimization with CFD

Turbine Blade Film Cooling Optimization with CFD

Pointwise and CFD Code Leo were used in a conjugate heat transfer analysis to optimize film cooling for the Air Force Research Lab High-Impact Technologies Research Turbine. The result is a more uniform temperature distribution over the turbine blades.

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Fluid-Structure Interaction on Wind Turbine Rotor Blades

Fluid-Structure Interaction on Wind Turbine Rotor Blades

Researchers at RWTH Aachen University are studying fluid-structure interaction on wind turbine rotor blades to develop strategies to increase their life expectancy and reliability. They use Pointwise's T-Rex for control over the meshing process.

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OpenVSP and Pointwise Work Together to Simplify CFD on New Vehicle Designs

OpenVSP and Pointwise Work Together to Simplify CFD on New Vehicle Designs

OpenVSP is an open source, parametric modeler used to quickly capture design intent so geometry information is easily provided in the appropriate form for various uses, including CFD. Therefore, several approaches were explored by which OpenVSP and Pointwise could be integrated to automate the volume meshing process for CFD.

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SU2-Pointwise Joint Workshop

SU2-Pointwise Joint Workshop

OpenVSP is an open source, parametric modeler used to quickly capture design intent so geometry information is easily provided in the appropriate form for various uses, including CFD. Therefore, several approaches were explored by which OpenVSP and Pointwise could be integrated to automate the volume meshing process for CFD.

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Tips for Handling Complex Geometries, Very Large Grids

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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Pointwise Boosts Garry Rogers Motorsport to Season Opening Win

Pointwise Boosts Garry Rogers Motorsport to Season Opening Win

Garry Rogers Motorsport is a racing partner with Volvo Car Australia. They used Pointwise and T-Rex meshing to help in the aerodynamic design of their new car for the 2014 season with excellent results in their simulations and on the track.

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Unsteady Engine Analysis with Moving Mesh in OpenFOAM®

Unsteady Engine Analysis with Moving Mesh in OpenFOAM®

Researchers at Politecnico di Milano have used Pointwise and OpenFOAM® along with moving, non-conformal mesh interfaces to analyze internal combustion engine performance. Their results on two benchmark cases compare well with experimental data.

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Introducing Unstructured Hexahedral Extrusion in Pointwise V17.2

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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Simulation of Unsteady Propeller Blade Loads Using OpenFOAM®

Simulation of Unsteady Propeller Blade Loads Using OpenFOAM®

Researchers at the University of Chalmers used Pointwise and OpenFOAM® to analyze unsteady propeller blade loads on ships that cause noise and vibration. Initial results are good and are being extended to include cavitation and pre-swirl stators.

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Supersonic Aircraft Shape Design Powered by SU2 and Pointwise

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

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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How We Meshed the IMR Brains and Beauty Contest Geometry

How We Meshed the IMR Brains and Beauty Contest Geometry

A few weeks ago several Pointwise engineers attended the 22nd International Meshing Roundtable (IMR). They brought with them a grid Carolyn Woeber and I generated for a benchmark geometry provided by the IMR steering committee.

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Pointwise Helps UTA Racing Push Aerodynamic Envelope

Pointwise Helps UTA Racing Push Aerodynamic Envelope

University of Texas at Arlington's (UTA) racing partnership with Pointwise during the past three years has resulted in an influx of aggressive aerodynamic development for the UTA Formula SAE race cars. The grid generation software has been crucial in several developments that have resulted in significant improvements to the wing packages on the cars.

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CFD Analysis of Cavitation and Acoustics 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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Multi-Module Centrifugal Pump Grid Using Pointwise's Unstructured Mesh Features

Multi-Module Centrifugal Pump Grid Using Pointwise's Unstructured Mesh Features

Combustion Research and Flow Technology (CRAFT Tech) has been using CRUNCH CFD® and Pointwise to design and evaluate pump systems for our customers. Pointwise has proven to be a robust and powerful tool for generating high-quality unstructured meshes.

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Mesh Manipulation for Moving Surfaces

Mesh Manipulation for Moving Surfaces

Many aerospace-related applications exist that require surfaces to move within a given region. This can include bodies moving relative to each other, as happens during a store separation, or surfaces actually changing shape, which is what happens with ablation and aeroelasticity.

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Pointwise Gives GRM a Time-Savings Edge in V8 Supercar Design

Pointwise Gives GRM a Time-Savings Edge in V8 Supercar Design

Garry Rogers Motorsport (GRM) is one of the most enduring racing teams in Australian motorsport and this year we are celebrating 50 years of racing involvement. The team competes in the hotly contested V8 Supercar championship, which is regarded as one of the finest touring car racing categories in the world.

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Syracuse University Gets CFD Work Spinning

Syracuse University Gets CFD Work Spinning

At Syracuse University, a mixed group of both graduate and undergraduate students had the opportunity to participate in a project involving an innovative new wing design. Overseen by Prof. Thong Dang, the team sought to analyze this new design to determine its practicality and effectiveness.

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Attempting to Break the Land Speed Record with the Help of CFD

Attempting to Break the Land Speed Record with the Help of CFD

This webinar will discuss how Darren Grove used Pointwise and EnSight to help design aft suspension fairings to reduce overall drag on the car while maintaining stability and control.

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Drag Effects of Heating and Cooling Cylinders in Crossflow

Drag Effects of Heating and Cooling Cylinders in Crossflow

The reduction of the drag force on all types and shapes of objects has historically been, and remains, a major focus of aerodynamicists and fluid mechanics researchers everywhere. Aircraft, automobiles, rockets, boats, and a multitude of other devices and components suffer from the ill effects of viscous and form drag.

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From CAD to CFD in Five Minutes

From CAD to CFD in Five Minutes

Customers have written many articles about how they apply Pointwise for their real applications. We have written many articles describing benefits about the features in Pointwise. However, these articles rarely describe the full meshing process in any detail.

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How T-Rex Unstructured Meshing Aids Transonic Aircraft Drag Reduction

How T-Rex Unstructured Meshing Aids Transonic Aircraft Drag Reduction

Pointwise's anisotropic tetrahedral extrusion method (T-Rex) is a robust and highly automated way of creating unstructured viscous meshes on complex geometries that reduces the effort required to accurately predict drag.

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Unstructured Viscous Boundary Layer Meshing: T-Rex

Unstructured Viscous Boundary Layer Meshing: T-Rex

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.

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Hybrid Meshing for a Horizontal Axis Wind Turbine

Hybrid Meshing for a Horizontal Axis Wind Turbine

This video walks you through the generation of a hybrid mesh for a horizontal axis wind turbine.

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High-fidelity, High-productivity CFD Simulations of Airflow over a Golf Club Head

High-fidelity, High-productivity CFD Simulations of Airflow over a Golf Club Head

The simulation of airflow over a golf club head will be used to demonstrate the complete CFD process from geometry creation through solution post-processing. Two different types of hybrid meshes are created; one is made exclusively in Pointwise, highlighting its anisotropic tetrahedral extrusion (T-Rex) meshing technology, and the other combines Pointwise with mesh generation tools developed at UTC SimCenter.

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Automating Viscous Meshing for a Transonic Aircraft Model Using Glyph Scripting

Automating Viscous Meshing for a Transonic Aircraft Model Using Glyph Scripting

This webinar will demonstrate appropriate meshing strategies while automating the grid generation process using Glyph for the NASA Common Research Model from the 4th AIAA Drag Prediction Workshop.

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Viscous Meshing: T-Rex

Viscous Meshing: T-Rex

This video demonstrates how Gridgen's T-Rex (anisotropic tetrahedral extrusion) technique can be run from within Pointwise through the use of a script.

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Viscous Meshing: Prism Extrusion

Viscous Meshing: Prism Extrusion

Extrusion of prism layers can be performed using a traditional algebraic technique in Pointwise as shown in this video.

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How to Master Hybrid Meshing for Wind Turbines

How to Master Hybrid Meshing for Wind Turbines

During this webinar, you will learn how to save time creating reliable meshes on the Sandia National Lab CX100 horizontal axis wind turbine using Pointwise's hybrid techniques.

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Parametric Optimization for Vertical Axis Wind Turbines Using Independent CFD Tools

Parametric Optimization for Vertical Axis Wind Turbines Using Independent CFD Tools

In this webinar we will illustrate an automated methodology that can be applied to optimizing blade design with independent CFD tools.

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