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.
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. 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.
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.
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. Preliminary CFD results show good agreement with empirical rotor hub wake measurements.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Pointwise's structured grid techniques generate high quality quad and hex grids as in this example for an axial rotor blade.