High-fidelity mesh on a co-axial rotor system

Coaxial rotor systems are appealing for multirotor drones, as they increase thrust withoutincreasing the vehicle’s footprint. However, the thrust of a coaxial rotor system is reduced comparedto having the rotors in line. It is of interest to increase the efficiency of coaxial systems, both to extendmission time and to enable new mission capabilities. This study investigates how adjusting the pitch of the lower rotor relative to that of the upper oneimpacts the overall efficiency of the system.A coaxial rotor system for a medium-sized drone with a rotordiameter of around 70 cm is used. For the CFD analysis of this problem,…

Meshing and Simulation of reversed Y-pipe structures

Y-pipe structures are widely used in many manufacturing and research areas for mixing different reactants solutions. The flow behaviors inside a Y pipe are worth studying to improve the mixing efficiency and control the flow properties. In this study, two different configurations of Y pipes are investigated. This structure is used for biomaterial production. Each pipe has varying cross-sections with restrictions and enlargements, which require very subtle handling of the near-wall regions to obtain high-quality mesh. The mixing chamber in the middle needs a particularly careful setup. Pointwise is used for the mesh generation in the two Y pipes. The…

2021 100% Quota Achievement

Delighted to announce that neptech received the 2021 100% Quota Achievement Award! We thank Cadence CFD for the official recognition and all our customers: without you we would have not reached this business success. Be sure we will keep focusing on customer satisfaction, 100%!

neptech and Nordcad in new CFD partnership

From 1 January 2022, neptech joined as a sales partner for Nordcad, who is specialized in software for electronics development and also PLM systems, software for designing RF- and antennas, and lately also CFD. Both neptech and Nordcad agree on the opportunities this new partnership gives. Faranggis, Managing Director at neptech, says:“This is a great opportunity for neptech to grow its business. Nordcad has long-term experience in the electronic business in the Nordic region, and we look forward to working closely with them to expand and enhance our services”.Not long ago, Nordcad added CFD software to their array of tools,…

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 UAVsDifferences to icing on manned aircraftSimulation of icing and icing penaltiesMeshing of iced airfoils Richard Hann Richard Hann is a researcher at the Norwegian University of Science and Technology (NTNU) on the topic of icing…

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 airframe.…

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…