CFD: merry christmas blender suzanne

A subforum specific to the development of the OpenFoam-based workbenches ( Cfd https://github.com/qingfengxia/Cfd and CfdOF https://github.com/jaheyns/CfdOF )

Moderator: oliveroxtoby

thschrader
Posts: 1365
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

CFD: merry christmas blender suzanne

Postby thschrader » Sat Nov 18, 2017 7:34 pm

There is a competition on youtube:
https://www.youtube.com/watch?v=lBG3qphtofE
Calculate the drag-coefficient of blender-suzanne.
I got cf=1,85. But my calculation is invalid, because I redesigned suzanne.. :geek:
The original stl is broken (eyes are not attached to head). You can fix it easy
with netfabb basic, but I wanted to use FC alone. Another Problem: the stl has more then
50000 facets, even if you can convert it to a watertight solid, you have the difficulty to
adress the facets in the boundary-dialogs.
FC-file on my dropbox 2,3 MB:
https://www.dropbox.com/s/5q24rf5xz2ua2 ... FCStd?dl=0
blenderSuzanne.JPG
blenderSuzanne.JPG (29.79 KiB) Viewed 647 times
Mesh.JPG
Mesh.JPG (152.59 KiB) Viewed 647 times
drag.JPG
drag.JPG (32.69 KiB) Viewed 647 times
turbulenceData.JPG
turbulenceData.JPG (109.08 KiB) Viewed 647 times
thschrader
Posts: 1365
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: CFD: merry christmas blender suzanne

Postby thschrader » Sat Nov 18, 2017 8:00 pm

...and some mesh-statistics:
I think the mesh is still too coarse for turbulence-modeling.
Runtime calculation more than 4 hours on my laptop.
checkMesh.JPG
checkMesh.JPG (23.74 KiB) Viewed 635 times
JV_3D
Posts: 41
Joined: Fri Dec 23, 2016 4:45 am

Re: CFD: merry christmas blender suzanne

Postby JV_3D » Mon Nov 20, 2017 3:06 pm

thschrader wrote:
Sat Nov 18, 2017 7:34 pm
There is a competition on youtube:
https://www.youtube.com/watch?v=lBG3qphtofE
Calculate the drag-coefficient of blender-suzanne.
I got cf=1,85. But my calculation is invalid, because I redesigned suzanne.. :geek:
The original stl is broken (eyes are not attached to head). You can fix it easy
with netfabb basic, but I wanted to use FC alone. Another Problem: the stl has more then
50000 facets, even if you can convert it to a watertight solid, you have the difficulty to
adress the facets in the boundary-dialogs.
FC-file on my dropbox 2,3 MB:
https://www.dropbox.com/s/5q24rf5xz2ua2 ... FCStd?dl=0
blenderSuzanne.JPG
Mesh.JPG
drag.JPG
turbulenceData.JPG
I am just curious about the software you use to create the equations as the last image? I have seen similar ones in the forum (maybe always posted by you?)
thschrader
Posts: 1365
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: CFD: merry christmas blender suzanne

Postby thschrader » Mon Nov 20, 2017 3:39 pm

JV_3D wrote:
Mon Nov 20, 2017 3:06 pm
I am just curious about the software you use to create the equations as the last image?
Hi JV_3D,
the turbulenceData-pic is a smath-studio file:
https://en.smath.info/view/SMathStudio/summary
monkeysm.zip
(12.92 KiB) Downloaded 74 times
(rename file to monkey.sm)

The checkMesh-pic is the data given when running the "checkMesh" command in the
bluecfd-terminal. bluecfd (=openfoam-clone for windows) is needed for using
the cfd-of-wb in FC.
http://bluecfd.github.io/Core/Downloads/
bluecfd.JPG
bluecfd.JPG (41.14 KiB) Viewed 547 times
JV_3D
Posts: 41
Joined: Fri Dec 23, 2016 4:45 am

Re: CFD: merry christmas blender suzanne

Postby JV_3D » Mon Nov 20, 2017 4:27 pm

thschrader wrote:
Mon Nov 20, 2017 3:39 pm
JV_3D wrote:
Mon Nov 20, 2017 3:06 pm
I am just curious about the software you use to create the equations as the last image?
Hi JV_3D,
the turbulenceData-pic is a smath-studio file:
https://en.smath.info/view/SMathStudio/summary
monkeysm.zip
(rename file to monkey.sm)

The checkMesh-pic is the data given when running the "checkMesh" command in the
bluecfd-terminal. bluecfd (=openfoam-clone for windows) is needed for using
the cfd-of-wb in FC.
http://bluecfd.github.io/Core/Downloads/
bluecfd.JPG
Thank you so much

SmathStudio looks pretty cool, it could help me with some equations I need to show