Interesting project: DesignSPHysics fluid simulator

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: 1402
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Interesting project: DesignSPHysics fluid simulator

Post by thschrader » Tue Dec 18, 2018 8:29 pm

The new DesignSPhysics-GUI is awesome !

create the case in 3D
define movement of one or more bodies
define physical and solver parameters (tons of options)
press „Change 3D/2D“ button ==> 2D case is generated, speeds up simulation

postprocessing
export fluid and body motion as vtk-series for paraview
generate csv-files for plotting forces and motion (x,y,z,pitch,roll,yaw) in excel
measure pressure at every point you want
a.s.o...all in one GUI

Thumbs up to the developer, great job!
DSPH_Case.FCStd
(9.83 KiB) Downloaded 26 times
wavetank.gif
wavetank.gif (285.19 KiB) Viewed 691 times
waveTankTutorial.JPG
waveTankTutorial.JPG (167.35 KiB) Viewed 691 times
results.JPG
results.JPG (132.64 KiB) Viewed 691 times

thschrader
Posts: 1402
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Interesting project: DesignSPHysics fluid simulator

Post by thschrader » Wed Dec 19, 2018 10:32 am

and some more info...
Define body-motion + 7 additional wave-generators
Constant and execution settings
Runtime solver log
Define floating state of objects.
pretty complicated stuff...
wave_generators.JPG
wave_generators.JPG (99.45 KiB) Viewed 667 times
solver_log.JPG
solver_log.JPG (227.24 KiB) Viewed 667 times
floating.JPG
floating.JPG (46.47 KiB) Viewed 667 times
execution.JPG
execution.JPG (65.82 KiB) Viewed 667 times
constant.JPG
constant.JPG (42.57 KiB) Viewed 667 times

thschrader
Posts: 1402
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Interesting project: DesignSPHysics fluid simulator

Post by thschrader » Mon Dec 31, 2018 12:53 pm

158x27x16 m „containership“ with engine failure in heavy sea drifting to
the coast. The peak level of the blue force-plot (horizontal force on ship)
is the moment, when the breaker slams at the hull. Peak-level 617 kN
per m hull lenght. After running the simulation, you can generate a csv-file
of the forces/motion. The csv was imported into Smath-studio to do a frequency
analysis with FFT. The red plane in the model is the wave-generator,
the red slice is the 2D computing domain. Complete simulation was 60 sec
with 0,2 sec timestep. Number of points approx 11000 (rough...).
Runtime on quadcore-cpu Intel celeron 2 hours. I need this machine...
https://www.nvidia.com/en-us/data-center/dgx-station/
Have a happy new year!
coastguard_needed.gif
coastguard_needed.gif (792.16 KiB) Viewed 557 times
model.JPG
model.JPG (60.04 KiB) Viewed 557 times

thschrader
Posts: 1402
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Interesting project: DesignSPHysics fluid simulator

Post by thschrader » Thu Jan 24, 2019 8:34 pm

Nice tutorial about sph-method:
https://www.youtube.com/watch?v=tAXHCAEgSuE
https://www.youtube.com/watch?v=OTlygbegQT4
The dualsphysics-manual is for people who are familiar with sph.
Joe Monaghan starts from beginning...

Bubble
Posts: 2
Joined: Fri Mar 15, 2019 9:26 am

Re: Interesting project: DesignSPHysics fluid simulator

Post by Bubble » Fri Mar 15, 2019 3:41 pm


thschrader
Posts: 1402
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Interesting project: DesignSPHysics fluid simulator

Post by thschrader » Tue May 14, 2019 7:01 pm

Refresh this thread:
There is a Dualphysics macro.
Any interest?
read this thread

frznaskari
Posts: 3
Joined: Wed Jul 31, 2019 5:19 am

Re: Interesting project: DesignSPHysics fluid simulator

Post by frznaskari » Wed Jul 31, 2019 7:40 am

i like simulate solitary wave with designsphysics ,how can i do it?

User avatar
PrzemoF
Posts: 2598
Joined: Fri Jul 25, 2014 4:52 pm
Contact:

Re: Interesting project: DesignSPHysics fluid simulator

Post by PrzemoF » Wed Jul 31, 2019 7:54 am

frznaskari wrote:
Wed Jul 31, 2019 7:40 am
i like simulate solitary wave with designsphysics ,how can i do it?
Reference: main thread about solitary wave
https://forum.freecadweb.org/viewtopic.php?f=3&t=38242

User avatar
makkemal
Posts: 393
Joined: Wed Apr 29, 2015 12:41 pm
Location: South Africa
Contact:

Re: Interesting project: DesignSPHysics fluid simulator

Post by makkemal » Wed Aug 14, 2019 7:04 am

Can anyone point me to a step by step tutorial on how to setup a problem and run it ?

Thanks
Michael

thschrader
Posts: 1402
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Interesting project: DesignSPHysics fluid simulator

Post by thschrader » Wed Aug 14, 2019 12:48 pm

makkemal wrote:
Wed Aug 14, 2019 7:04 am
Can anyone point me to a step by step tutorial on how to setup a problem and run it ?

Thanks
Michael
yep. please see tutorials.
https://www.youtube.com/user/DualSPHysics/videos

Post Reply