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by r.tec
Wed Feb 03, 2021 9:54 am
Forum: CfdOF / CFD
Topic: Another problem case (solved and updated)
Replies: 8
Views: 776

Re: Another problem case (solved and updated)

Apologies to all if I am nerving but I am so amazed of what is possible with "household means", i.e. a not too up-to-date PC, that I simply have to make an update on this fred. The valve lift is 10 mm. 2021-02-03 side view.gif Unforutunately the top view and the stream line and glyph gif-animations ...
by r.tec
Fri Jan 29, 2021 10:21 am
Forum: CfdOF / CFD
Topic: Another problem case (solved and updated)
Replies: 8
Views: 776

Re: Another problem case (solved and updated)

Played a little bit around with Paraview. I am impressed:

Uinlet = 30 m/s, Solver ran for over 7 hours, practically the hole day through (n=1500 iterations)
ezgif.com-apng-to-gif.gif
ezgif.com-apng-to-gif.gif (521.15 KiB) Viewed 533 times
But still have a lot to learn about Paraview. Let's go....
by r.tec
Tue Jan 26, 2021 12:05 pm
Forum: CfdOF / CFD
Topic: Another problem case (solved and updated)
Replies: 8
Views: 776

Re: Another problem case (solved and updated)

Now, that I took out all my mistakes with the help of Thomas I tried another model. This time an inlet-channel of a cylinder head into the cylinder bore. A quite complicated geometry. U=30 m/s CFD 30mps 01.png The next step will be to subtract the valve guide and the valve itself from the model and ...
by r.tec
Thu Jan 21, 2021 4:38 pm
Forum: CfdOF / CFD
Topic: Another problem case (solved and updated)
Replies: 8
Views: 776

Re: Another problem case

Thank you Thomas, you made my day after days of frustration.
015 paraview 01.png
015 paraview 01.png (82.92 KiB) Viewed 696 times
016 glyph1.png
016 glyph1.png (207.48 KiB) Viewed 696 times
Now I have to learn how to get these nice arrows in one plane like other simulaltions here have.

Enough to do.....

Thanks again!
by r.tec
Thu Jan 21, 2021 12:00 pm
Forum: CfdOF / CFD
Topic: Another problem case (solved and updated)
Replies: 8
Views: 776

Re: Another problem case

Mesh refinement: 011 mesh refinement.png Mesh case: 012 mesh case.png What do I do wrong? OS: Windows 10 (10.0) Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.19.23683 (Git) Build type: Release Branch: master Hash: af4de262e326452fd79f036253cf7cac6a7e7e00 Python version: 3.6.8 Qt ve...
by r.tec
Thu Jan 21, 2021 11:57 am
Forum: CfdOF / CFD
Topic: Another problem case (solved and updated)
Replies: 8
Views: 776

Re: Another problem case

Fluid property:
006 fluid property.png
006 fluid property.png (14.06 KiB) Viewed 773 times
Initialise flow field:
007 initialise flow field.png
007 initialise flow field.png (15.76 KiB) Viewed 773 times
Boundary condition wall:
008 boundary condition wall.png
008 boundary condition wall.png (13.49 KiB) Viewed 773 times
Boundary condition inlet:
009 boundary condition inlet.png
009 boundary condition inlet.png (23.54 KiB) Viewed 773 times
Boundary condition outlet:
010 boundary condition outlet.png
010 boundary condition outlet.png (21.8 KiB) Viewed 773 times
by r.tec
Thu Jan 21, 2021 11:51 am
Forum: CfdOF / CFD
Topic: Another problem case (solved and updated)
Replies: 8
Views: 776

Another problem case (solved and updated)

Hello everybody, I must say that I am absolutely new to CFD and I want to increase my knowledge just for fun as much as possible. With the help of Thomas Schrader I manged to get blueCFD, cfMesh and Paraview installed and running. Now I designed a simple curved channel with Face1 being the wall Face...
by r.tec
Tue Jan 12, 2021 2:50 pm
Forum: Forum in Deutsch
Topic: Rundungen im Zahnrad erstellen
Replies: 22
Views: 815

Re: Rundungen im Zahnrad erstellen

Hallo, willkommen im Club. Ich weiß nicht ob Du weißt, dass man Zahnräder in FC nicht neu erfinden muss (wie das gemeine Rad an sich). Kennst Du die zusätzliche Workbench von Looo, nämlich die FCGear. Die macht Dir alles, was Du willst, Du musst Dich nur ein wenig mit dem Konstruktionselement Zahnra...
by r.tec
Wed Dec 16, 2020 2:15 pm
Forum: Forum in Deutsch
Topic: cfMesh Installationsproblem
Replies: 12
Views: 676

Re: cfMesh Installationsproblem

Ich taste mich so langsam heran, aber mit Rückschlägen: Der Mesh hat funktioniert wie man in Paraview sehen kann: CFD Prob 08.png Dann den CfD-Solver angeklickt und und case write gedrückt, leider eine Fehlermeldung: CFD Prob 09.png Nun stehe ich auch an der Grenze meines CfD-Wissens, weil offenbar ...

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