Obtaining accurate computational fluid dynamics (CFD) for nuclear reactor rod bundles can be extremely challenging due to the complex geometry of the rods and wrapped wires. Automatic unstructured meshing techniques do not provide enough control over the mesh for the wire-wrapped rod bundles. Multiple Pointwise meshing techniques were used to capture the complex geometry. A fully structured mesh was used near the boundaries, and a hex-dominant unstructured mesh was used away from the boundaries to enable an accurate CFD solution for a 19-rod nuclear reactor rod bundle with ANSYS CFX. Pointwise provides a great deal of control and different techniques that can be used to make high-quality meshes for extremely complex geometries.
Watch a presentation showing how leveraging Pointwise meshing techniques enabled accurate computational fluid dynamics (CFD) results for nuclear reactor rod bundles at stringent convergence levels, which cannot be achieved with automatic "free" meshing alone.
Learn how Pointwise was used in combination with Helyx Adjoint to enable fully automated performance-driven design evolution and optimization of automotive components. Read the case study.
Improve CFD simulation efficiency and accuracy using solution adapted meshing. Watch this recorded Let’s Talk Meshing Live Q&A session to learn how mesh adaptation can help make your CFD process more efficient and accurate.
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.
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.
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.
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.
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.
Last month several Pointwise engineers attended the 24th International Meshing Roundtable (IMR) held in Austin, Texas. We brought two grids generated for two benchmark geometries provided by the IMR steering committee. The grids were made by Carolyn Woeber, Travis Carrigan, and myself. We were pleased to hear that the grids were recognized both for their technical merit and striking visuals - they had won the Meshing Contest award.
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.
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.
The simulation of airflow over a golf club shows the CFD process from geometry creation through solution post-processing for two hybrid meshes: one made exclusively in Pointwise and one combining Pointwise with mesh generation tools developed at UTC SimCenter.