28X Increase in Simulation Speed by Using Pointwise Meshes
Read the case study about how ADSCFD applied their GPU accelerated flow solver to the challenge of advanced compressor casing treatment analysis. With typical speedups of nearly 30X, analyses can now be accomplished in a few hours rather than weeks on traditional compute infrastructure.
CFD and Feature Questions Answered by Pointwise Product Planning Team
Several new significant features have been added in our latest version, Pointwise V18.4. In this Q&A, our Product Planning Team will answer questions about the new features, the future of computational fluid dynamics (CFD), and the Pointwise development plan.
Turbulence Model Influence on Flow in the FDA Benchmark Model
Computational fluid dynamics (CFD) can be used to influence decisions early in the design process. The focus of this work was to understand the influence exerted by the turbulence model on CFD simulation results for the FDA Blood Pump benchmark geometry.
CFD Simulation of Supercritical CO2 Power Cycles
A team of engineers at CRAFT Tech set out to model an experimental supercritical carbon dioxide (S-CO2) compressor configuration. The engineers needed software that would resolve flow gradients with a minimum number of grid points and be flexible enough to provide the best grid for each region of the machine that they were modeling. They found both these solutions in Pointwise.
Branch Technology’s Progress Utilizing Structured Grids Created with Pointwise
Watch a presentation about how using Pointwise for structured mesh generation enables Branch Technology to increase the reliability of their process while simultaneously decreasing the time to generate printer instructions. Learn how Pointwise reduces the time for generating 3D printed instructions from weeks to hours.
Pointwise Enables Revolutionary Building Construction
Branch Technology recognizes a problem with efficiency, cost, and effectiveness in building construction. They leverage inspiration from nature and large scale robotic additive manufacturing to revolutionize building construction and became the first company to 3D print large-scale structures. Using Pointwise for structured mesh generation enables Branch Technology to increase reliability of their process while simultaneously decreasing the time to generate printer instructions. Learn how Pointwise reduces the time for generating 3D printed instructions from weeks to hours.
Pointwise for Marine CFD Simulation Workshop
Download the presentations from the Pointwise for Marine Workshop to learn how to increase CFD simulation accuracy and efficiency with meshing flexibility. You will also see technical background information about the how and why of the meshing techniques developed and honed with many years of experience in Pointwise.
Pointwise for Automotive CFD Simulation Workshop
Download the presentations from the Pointwise for Automotive Workshop to learn how to increase automotive simulation accuracy and efficiency with meshing flexibility. You will also see technical background information about the how and why of the meshing techniques developed and honed with many years of experience in Pointwise.
Mesh Strategies for the FDA Benchmark Centrifugal Blood Pump
Learn how a hybrid-viscous mesh can improve solution efficiency. For many applications, structured meshes are preferred. However, if more efficient meshing techniques are possible and provide accurate solutions, exploration of those alternatives is imperative. In this webinar, we compare solutions obtained using a hybrid-viscous mesh with a multi-block structured mesh.
Hybrid Conformal Meshing for Wind Farm CFD Applications
Learn more about techniques that can be used to generate hybrid conformal meshes that span the entirety of a wind farm. In this webinar, we discuss how to efficiently move from the terrain scale of a wind farm to the wind turbine scale and how the process was automated to support the arbitrary placement of wind turbines for siting applications.
Hybrid Meshing Key to Improving CFD Simulation Efficiency
Read the case study, "Hybrid Meshing Key to Improving CFD Simulation Efficiency," which summarizes how a T-Rex hybrid grid showed up to a seven-fold improvement in solution efficiency compared to other approaches in predicting thrust and torque for a marine propeller.
Meshing Strategies for Propulsion Aerodynamics
Several meshing techniques and meshing best-practices have been developed while creating workshop-supplied meshes for the 3rd and 4th AIAA Propulsion Aerodynamics Workshops. These meshing strategies and lessons learned have been collected to help CFD practitioners gather experience meshing these types of challenging internal flow problems.
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.
Pointwise Aids Bid to Make World’s Fastest Bike
The Human Power Team is comprised of students with a shared goal: to build a highly advanced recumbent bicycle capable of breaking the world record for the fastest human alive. We will put our bike, the VeloX, to the test for the seventh time in the annual World Human Powered Speed Challenge in Battle Mountain, Nevada. This year the Human Power Team will focus purely on the world record for women, which was set at 121.81 km/h by Barbara Buatois in 2010.
Multi-block Structured Meshing of a Diffusing S-Duct
In this webcast, we use a diffusing serpentine inlet to demonstrate some of the more advanced structured meshing techniques available in Pointwise. These meshing strategies highlight how Pointwise users can generate uniform, boundary-layer resolved grids with exceptional cell shape quality where the inlet’s shape transitions from something with a square cross-section upstream to a circular shape at the exit.
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.
Rotorcraft Hub Wake Analysis Using Overset Meshes
Researchers at Pennsylvania State University’s Applied Research Laboratory share an overview of their ongoing work involving overset grid CFD simulations of an incompressible rotorcraft hub they performed using the overset meshing tools available in Pointwise.
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.
Automating Geometry and Mesh Generation for Heat Exchangers
Maura Gallarotti, a master's student at KTH Royal Institute of Technology in Sweden, used Pointwise Glyph scripting to quickly generate families of candidate heat exchanger designs and to perform parametric studies by changing the dimensions of several geometrical parameters to assess the effect of these parameters on cooling efficiency. With no experience using Pointwise and having never heard about Tcl/Tk or Glyph she was able to write a script to completely automate the grid generation process in less than a week.
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.
High Fidelity Overset Structured Mesh Generation for Marine Hydrokinetic Devices
Researchers at The Pennsylvania State University used the overset grid assembly tools in Pointwise to generate high-quality structured overset meshes for analysis of a horizontal axis water turbine. The flexibility offered by overset grids made it easy for them to add higher resolution grid blocks to resolve regions with high flow gradients like the turbine blade tips, wakes and tip vortices. This resulted in good agreement with experimental data even for flow details like the interaction between blade wakes and the support tower.
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.
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.
Supersonic Jet in Crossflow Analysis with Pointwise and CFD++
Pointwise and CFD++ were used to analyze a jet in supersonic crossflow. Together they were able to provide appropriate modeling for accurate results on this relatively simple geometry with complex flow physics with shock waves and viscous effects.
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.
Students Use Pointwise with Overset Grids for Aerodynamic Analysis
As part of their capstone senior project, engineering students at Technion – Israel Institute of Technology used Pointwise to assist in the detailed aerodynamic design of a highly-maneuverable, supersonic missile they designed.
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.
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.
Glyph Scripting Automates Terrain Meshing for Wind Turbine Siting
Texas A&M University student Scott Evetts worked as a Pointwise intern this summer. He had no prior CFD or mesh generation experience, but he was able to accomplish a great deal in three months. Here he describes one of his Glyph scripting projects.
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.
Pointwise Meshes for Computation of Basic States in Boundary Layer Stability
Boundary layer transition from laminar to turbulent affects heat transfer, drag, and engine performance, but is still poorly understood. Researchers at Texas A&M are developing computational methods for predicting transition across all speed ranges.
Mesh Topology Influence on Volute Aerodynamic Performance Computed Using Code Leo
Three meshes (multi-block structured and unstructured with hexahedral and prismatic boundary layers) were generated for a generic volute and simulations were performed in the Code Leo CFD solver. Meshing time, solution time, and solution accuracy are compared.
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.
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.
Co-Simulation for the Renewable Energy Sector
Many simulations within the field of renewable energy involve the coupling of different physics. An exemplary example is the analysis of a wind turbine. Here the structure (blades, tower, generator, gearbox, etc.) is interacting with the fluid.
Computational Optimization of Rocket Engine Nozzles
The primary aim of this project was to investigate the capability of using modern commercial computational fluid dynamics (CFD) packages (Pointwise and ANSYS Fluent®) as tools for analysis and design of rocket engine nozzles.
Structured Grid for an Aneurysm
Beginning with a faceted geometry model of an arterial aneurysm, this webinar demonstrates how to generate a multi-block structured grid with O-H topology quickly and with high quality.
CFD Investigation of LBE Rod Bundle Flow
LBE is a eutectic mixture consisting of 45 percent lead and 55 percent bismuth. It is foreseen as a possible coolant for Generation IV nuclear reactor systems. The most interesting properties of LBE in comparison with lead and water are presented in Table 1.
Gas Turbine Combustor Mixing at Cranfield
Natural gas accounts for more than 23 percent of the world's energy production. Although it is not used in airplane engines because of its large storage volume, it has become widespread in industrial gas turbines and is the fuel of choice for many to plug the “energy gap” within the United Kingdom.
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.
Emirates Team New Zealand Uses Pointwise for AC72 Hydrodynamics Design
The 34th America's Cup will be contested this fall in San Francisco Bay in high-speed, high-tech, hydrofoiling catamarans hitting speeds upwards of 40 kts (more than 46 miles per hour). These new AC72 class catamarans are 72 feet long (22 m), 46 feet wide (14 m) with a wing mast towering 131 feet (40 m) above the water.
Texas A&M Uses Pointwise Meshes for Boundary Layer Stability Analysis
Researchers at Texas A&M University are studying boundary layer stability to gain insight into how transitions from laminar to turbulent flow occur. Their research has applications from low-speed flows in which the laminar-turbulent transition location affects drag and flow separation characteristics to hypersonic flows in which the difference between low laminar and much higher turbulent heating rates can determine whether a space vehicle will successfully pass through the atmosphere or burn up on reentry.
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.
Mesh Generation for Airframe Noise Computations
As a company, one of Pointwise's goals is to be a good advocate of the meshing and computational fluid dynamics (CFD) communities. Being an advocate means participating in technical conferences and workshops and with other community members in a non-partisan way.
Attempting to Break the Land Speed Record with the Help of CFD
This webinar will discuss how the North American Eagle land speed record team used Pointwise and CFD++ to help design aft suspension fairings to reduce overall drag on the car while maintaining stability and control.
Structured Meshing for Low-Speed Ship Maneuvering Simulations
In this webinar, we will demonstrate how to create a structured mesh suitable for low Froude number ship resistance predictions on the U.S. Navy Surface Combatant DTMB 5415 ship hull using hyperbolic extrusion and elliptic smoothing.
Multiblock Structured Meshing for a High Stagger Angle Rotor: Part 2
This two-part video is aimed at providing guidance in creating a CFD ready viscous multiblock structured mesh for a single passage of a high stagger angle axial rotor geometry.
Multiblock Structured Meshing for a High Stagger Angle Rotor: Part 1
This two-part video is aimed at providing guidance in creating a CFD ready viscous multiblock structured mesh for a single passage of a high stagger angle axial rotor geometry.
How to Master Hybrid Meshing for Wind Turbines
During this webinar, you will learn how to save time creating CFD meshes on the Sandia National Lab CX100 horizontal axis wind turbine using a combination of Pointwise’s structured and unstructured mesh techniques.
Quick High-Quality Structured Meshing for Axial Pumps
Pointwise reduces the time needed for high-fidelity CFD simulation of turbomachinery. In this webinar, we demonstrate the techniques used to create a multiple-block, structured mesh for the DARPA HIREP Axial Pump.
Meshing Forensics II: Overcoming Common Structured Gridding Pitfalls
The topology requirements of structured grids present many challenges that have to be overcome. We describe the more common challenges, how to avoid them, and how to resolve them when they arise.
Meshing Forensics: How to Recover When Things Go Wrong
Meshing presents a myriad of challenges from geometry modeling through mesh export to the flow solver. This webinar shares essential tips for avoiding and resolving common problems.
Pointwise Used for Structured Mesh in Submarine Sail Design
Under its Corporate Enabling Research Program (CERP) initiative for future undersea warfare, the Australian Defence Science & Technology Organisation (DSTO) is investigating submarine concept designs.
Pointwise Aids Flight Experiment, Ground-Based Research for SCRAMSPACE International Access-to-Space Project
Safe, economical and ecologically responsible access to space is a major challenge for all nations due to the dependence of the global economy on assured and secure access to space-based services. The most promising way to meet this challenge is to extend aeronautical technology to hypersonic vehicles powered, at least partially, by air breathing supersonic combustion ramjet engines (scramjets).
Meshing Centrifugal Stages for CFD and FEA Is Easy with Pointwise
Cameron's Compression Systems in Buffalo, NY, is a leading worldwide provider of integrally geared centrifugal compressors. The company, which has been in the business for more than 50 years, designs and manufactures highly customized centrifugal compressors for air separation and process gas businesses worldwide.
Pointwise Works to Make Aircraft Quieter
The goal of NASA's Quiet Aircraft Technology (QAT) program is to reduce perceived aircraft noise by 50 percent in 10 years and by 75 percent in 25 years, using 1997 levels as the baseline.
Weir American Hydro Comes Up to Speed Quickly
Weir American Hydro is a leading supplier and installer of hydroturbines and pumps for hydroelectric power generation. They have a particular strength in improving the efficiency of existing power stations.
Wind Turbine Micro-Siting Analysis at Vestas Wind Systems
As a leader in wind energy, Vestas Wind Systems A/S, has installed over 41,000 turbines in 65 countries across five continents, and they continue to install wind turbines worldwide at the rate of one every four hours.