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by Crossleyuk
Mon May 18, 2020 9:11 am
Forum: CfdOF / CFD
Topic: Computational Fluid Dynamics (CFD) workbench using OpenFOAM
Replies: 279
Views: 44390

Re: Computational Fluid Dynamics (CFD) workbench using OpenFOAM

Thank you again for your interest Thomas, great to be in touch. The device is a controlled flow restrictor for use in gas or lquid systems. The aim is to control the flow that generates the vortex in order to limit the overall resistance. 1) Currently, each "result" requires in the order of 2 CFD co...
by Crossleyuk
Fri May 15, 2020 3:21 pm
Forum: CfdOF / CFD
Topic: Computational Fluid Dynamics (CFD) workbench using OpenFOAM
Replies: 279
Views: 44390

Re: Computational Fluid Dynamics (CFD) workbench using OpenFOAM

Thank you so much RatonLaveur that means a great deal to me. Your thoughts are indeed in line with mine. I'm using a series of ParaView planes in the axial supply port to get a good average velocity and flow. My thoughts have also been for the reversing core of the exiting vortex but that's so remot...
by Crossleyuk
Fri May 15, 2020 2:55 pm
Forum: CfdOF / CFD
Topic: Computational Fluid Dynamics (CFD) workbench using OpenFOAM
Replies: 279
Views: 44390

Re: Computational Fluid Dynamics (CFD) workbench using OpenFOAM

Hello again, Things moved on a great deal since my last forum post and I have a new model that I could not have generated without your fantastic help. Not sure why I'm doing this so sorry if it's in the way. This is the chart that I've now generated from the final eleven, of many many, CfdOF case ru...
by Crossleyuk
Fri Jan 24, 2020 9:16 am
Forum: CfdOF / CFD
Topic: Computational Fluid Dynamics (CFD) workbench using OpenFOAM
Replies: 279
Views: 44390

Re: Computational Fluid Dynamics (CFD) workbench using OpenFOAM

Sorry,

Had another look at 04:00am this morning and rebuild my model. Hope it's sorted the problem now as it approaches 5000 iterations after 5 hours and not sure what was wrong before. Sorry to trouble you!

Michael
Rev 19_1 (5 hours) Iterations.png
Rev 19_1 (5 hours) Iterations.png (95.32 KiB) Viewed 405 times
by Crossleyuk
Thu Jan 23, 2020 4:25 pm
Forum: CfdOF / CFD
Topic: Computational Fluid Dynamics (CFD) workbench using OpenFOAM
Replies: 279
Views: 44390

Re: Computational Fluid Dynamics (CFD) workbench using OpenFOAM

First off, this is now and edit. I hope I sorted the problem at 4:00am this morning. but here is the initial question. Fantastic results since our last exchange but new problem I think. My model is larger again and it has worked very well untill about a week ago when it started to fail after a sign...
by Crossleyuk
Fri Oct 11, 2019 10:18 pm
Forum: CfdOF / CFD
Topic: Computational Fluid Dynamics (CFD) workbench using OpenFOAM
Replies: 279
Views: 44390

Re: Computational Fluid Dynamics (CFD) workbench using OpenFOAM

Thank you again Oliver, I did try that after your suggestion that also came from ParaView forum and obtained the following. I actually managed to generate a clip and glyph that gave me thye omega pattern on the clip surface. Made great progress today and can make progress now. Key thing is I can now...
by Crossleyuk
Thu Oct 10, 2019 7:54 pm
Forum: CfdOF / CFD
Topic: Computational Fluid Dynamics (CFD) workbench using OpenFOAM
Replies: 279
Views: 44390

Re: Computational Fluid Dynamics (CFD) workbench using OpenFOAM

Thanks Oliver, I'll try that all out.

Michael
by Crossleyuk
Thu Oct 10, 2019 11:09 am
Forum: CfdOF / CFD
Topic: Computational Fluid Dynamics (CFD) workbench using OpenFOAM
Replies: 279
Views: 44390

Re: Computational Fluid Dynamics (CFD) workbench using OpenFOAM

Hope I've provided enough information and as I say, I've posted here and on Paraview Forum.

10-10-19 PV 5.4.1 About.PNG
10-10-19 PV 5.4.1 About.PNG (203.78 KiB) Viewed 546 times
10-10-19 PV 5.7.0 About.PNG
10-10-19 PV 5.7.0 About.PNG (205.69 KiB) Viewed 546 times
10-10-19 PV 5.4.1 FreeCAD CfdOF About.PNG
10-10-19 PV 5.4.1 FreeCAD CfdOF About.PNG (203.99 KiB) Viewed 546 times
by Crossleyuk
Thu Oct 10, 2019 11:08 am
Forum: CfdOF / CFD
Topic: Computational Fluid Dynamics (CFD) workbench using OpenFOAM
Replies: 279
Views: 44390

Re: Computational Fluid Dynamics (CFD) workbench using OpenFOAM

OS: Windows 10 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.18.16117 (Git) Build type: Release Branch: releases/FreeCAD-0-18 Hash: dbb4cc6415bac848a294f03b80f65e888d531742 Python version: 3.6.6 Qt version: 5.6.2 Coin version: 4.0.0a OCC version: 7.3.0 Locale: English/UnitedStates...
by Crossleyuk
Sun Oct 06, 2019 10:28 am
Forum: CfdOF / CFD
Topic: Computational Fluid Dynamics (CFD) workbench using OpenFOAM
Replies: 279
Views: 44390

Re: Computational Fluid Dynamics (CFD) workbench using OpenFOAM

Thnanks for the feedback. I couldn't understand why gauge or absolute should make such differences as you say pressure difference must be the driver in incompressible flow. I'm now repeating with increased numbers of iterations but will check out your initial conditions suggestion next. Quick questi...

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