Simulation of in-flight icing on UAVs

Using icing simulations on unmanned aerial vehicles to develop ice protection systems.  Inflight icing is a severe hazard significantly limiting the usage of autonomous unmanned aerial vehicles (UAVs). Researchers at the Norwegian University of Science and Technology (NTNU) investigate icing on UAVs and develop mitigation technologies together with UBIQ Aerospace. This webinar introduces the issues of in-flight icing on UAVs and discusses the following topics: Icing on UAVs Differences to icing on manned aircraft Simulation of icing and icing penalties Meshing of iced airfoils Richard Hann Richard Hann is a researcher at the Norwegian University of Science and Technology (NTNU)…

How to Mesh a Frozen Drone

Richard Hann, Norwegian University of Science and Technology (NTNU) Icing of drones is a severe hazard that significantly limits the usage of autonomous unmanned aerial vehicles (UAVs). Computational fluid dynamic (CFD) methods, originally developed for manned aircraft icing, are an important tool for understanding the effects of icing on UAVs. One of the most challenging tasks for the simulation is the generation of high-quality meshes of complex ice shapes. Atmospheric icing, also called in-cloud icing, occurs when an aircraft encounters supercooled droplets in the atmosphere. Liquid droplets, with a temperature below freezing, turn into ice when they collide with the…

Mesh Strategies for the FDA Benchmark Centrifugal Blood Pump

1 October 2019 at 10 a.m. CDT (UTC -5) Learn how a hybrid-viscous mesh can improve solution efficiency The focus of this work is to explore hybrid and multi-block structured meshing strategies and their impact on solution accuracy for a Food and Drug Administration (FDA) benchmark case involving a centrifugal blood pump. If no appreciable change in solution accuracy is observed per each meshing strategy, hybrid meshing techniques may facilitate a more efficient solution process. Designed to operate across a large range of flow conditions, the blood pump consists of four blades attached to a rotor base and shaft. Pointwise…

Pointwise Adds Native Interface to Conceptual Design Software ESP

FORT WORTH, TX (5 March 2019) – Pointwise released an updated version of its computational fluid dynamics (CFD) mesh generation software. While primarily a maintenance release, it includes new geometry model import, improved CFD flow solver export, and user interface updates. “We are currently performing research with MIT and the U.S. Air Force on automatic meshing,” said Dr. Steve Karman, a member of Pointwise’s Applied Research Team. “As part of that effort, we have added import of EGADS files, the native geometry format of the Engineering Sketch Pad (ESP) conceptual design software.” This native coupling of Pointwise’s meshing with ESP…

polynomial degree 2 hybrid mesh

High-Order Mesh Generation for CFD Now Available in Pointwise

FORT WORTH, TX (20 September 2018) - The latest release of Pointwise’s computational fluid dynamics (CFD) mesh generation software delivers high-order, curved mesh generation, the fundamental building block required by the next generation of CFD solver software that promises dramatic increases in solution accuracy and computational efficiency. “High-order numerical schemes hold a great deal of promise for improving the accuracy of CFD with the added benefit of a decrease in the number of mesh cells versus linear mesh methods,” said John Chawner, Pointwise’s president. “Over the past several years we have been developing and testing new software to generate the…

Boundary Layer Mesh

Better Boundary Layer Resolution Added to Pointwise’s CFD Meshing Software

FORT WORTH, TX (23 August 2018) - Pointwise has released a new, updated version of its computational fluid dynamics (CFD) mesh generation software. Building on experiences gained through participation in CFD workshops, this new release includes the ability to customize the near-wall mesh for accurate and efficient boundary layer resolution.“Our involvement in several American Institute of Aeronautics and Astronautics (AIAA) workshops on CFD has allowed us to learn more not only about how boundary layers should be resolved with the mesh but also about the flexibility our customers need in prescribing boundary layer regions,” said Carolyn Woeber, Pointwise’s manager of…

Overset Data Displayed on a Persistent Cut for a Marine Propeller Mesh

Pointwise V18.1 New Features Supporting Overset Meshing and Automation

FORT WORTH, TX (26 June 2018) – Pointwise has released the webinar, “Meshing Automation and Adaptability in Pointwise V18.1.” which details the new features supporting overset meshing and automation tools in Pointwise. This webinar introduces the new features found in Pointwise Version 18.1, including Frameworks for independent body meshing with local coordinate systems and instancing. It demonstrates the new examine features including persistent cutting planes, diagnostic filters, picking cut plane locations, and creating point cloud sources from various types of displayed examine cells or overset objects. The webinar also shows you how to include domains as sources when adapting a…