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Author: Nejc

Air Assist Nozzle for Laser Cutter

Nejc November 6, 2020 November 8, 2020Uncategorized CFD, laser cutting, OpenFOAM 1

I solved the problem with burn marks on Klarart‘s laser cutter. Here is the blog post about details. At the end, I mentioned that the air assist nozzle might not…

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Slow Chrome Remote Desktop Connection: Solved!

Nejc November 3, 2020 November 3, 2020Uncategorized 18

The Problem I’ve been using Chrome Remote Desktop quite happily for a while now. But sometimes it just wouldn’t work as expected. It would connect with no problems but then…

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Laser Cutting Burn Marks And How to Get Rid of Them

Nejc November 1, 2020 November 7, 2020Uncategorized laser cutting 1

There are tons of advice on how to clean laser cutting burn marks. Most of them are useless but the ones that work require quite a lot of elbow grease.…

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OpenFOAM and DAKOTA: a Complete Guide

Nejc October 17, 2020 November 1, 2020Uncategorized blockMesh, CFD, DAKOTA, OpenFOAM, snappyHexMesh, wind turbine 0

Running a single CFD simulation rarely provides enough information to find a good hydraulic or aerodynamic design of a component. In many cases the poor engineer has to wrestle an…

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A Parametric CFD Model: Wind Turbine from Pipes

Nejc October 17, 2020 November 1, 2020Uncategorized blockMesh, CFD, DAKOTA, OpenFOAM, snappyHexMesh, wind turbine 2

I’m building a wind turbine and as you might imagine, the blades are Ye Royale Paine In Me Buttocks. Too big for a CNC, too exposed for a 3D print,…

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blockMesh for External Flows

Nejc October 17, 2020 November 1, 2020Uncategorized blockMesh, OpenFOAM, snappyHexMesh 1

The Old-Fashioned blockMesh BlockMesh is the weapon of choice for directly generating rather simple meshes of channels, pipes, 2D-stuff etc. Those are mostly internal flows. With external flows, life gets…

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RunFunctions: a Quick Cheatsheet

Nejc October 3, 2020 November 1, 2020Uncategorized CFD, OpenFOAM 2

All OpenFOAM tutorials have Allrun and Allclean scripts which call some mysterious RunFunctions from even more mysterious sources. The most mysterious thing of all this is how poorly those are…

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Classy Classes for blockMesh

Nejc February 2, 2020 November 1, 2020Uncategorized blockMesh, CFD, OpenFOAM 1

IMPORTANT! classy_blocks have been massively improved but this article hasn’t. Please refer to readme in repository for most up-to-date information and examples. blockMesh: pros and cons blockMesh is a great…

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