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 )

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Steban
Posts: 12
Joined: Sat Sep 01, 2018 4:13 am

Re: Interesting project: DesignSPHysics fluid simulator

Post by Steban » Wed Sep 12, 2018 7:33 pm

Thanks friend, you help me a lot with this information!!

Steban
Posts: 12
Joined: Sat Sep 01, 2018 4:13 am

Re: Interesting project: DesignSPHysics fluid simulator

Post by Steban » Thu Sep 13, 2018 7:11 pm

Hi!! maybe somebody work with simulation of inyection molds? i dont know how introduce the preasure and others values?? :cry: :cry:
Thanks for your time.

OS: Windows 7
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.13528 (Git)
Build type: Release
Branch: releases/FreeCAD-0-17
Hash: 5c3f7bf8ec51e2c7187789f7edba71a7aa82a88b
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: Spanish/Colombia (es_CO)

thschrader
Posts: 1432
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Interesting project: DesignSPHysics fluid simulator

Post by thschrader » Thu Sep 13, 2018 7:53 pm

Steban wrote:
Thu Sep 13, 2018 7:11 pm
Hi!! maybe somebody work with simulation of inyection molds? i dont know how introduce the preasure and others values?? :cry: :cry:
Thanks for your time.
like this?
https://www.youtube.com/watch?v=iFOLU816mmo

Steban
Posts: 12
Joined: Sat Sep 01, 2018 4:13 am

Re: Interesting project: DesignSPHysics fluid simulator

Post by Steban » Thu Sep 13, 2018 10:09 pm

like this?

Exactly!, you have more information about that? exist some complement for freecad? On the description of the video it dont give me much information :/

thschrader
Posts: 1432
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Interesting project: DesignSPHysics fluid simulator

Post by thschrader » Fri Sep 14, 2018 9:21 am

Steban wrote:
Thu Sep 13, 2018 10:09 pm
like this?

Exactly!, you have more information about that? exist some complement for freecad? On the description of the video it dont give me much information :/
They used a modified interFoam solver (I have never tested it).
https://github.com/krebeljk/openInjMoldSim
Simulating a thin structure with dualsphysics can be difficult.
There is a gap between the boundary and the fluid, see page 2 this thread and
http://dual.sphysics.org/index.php/faq/#Q_13

Steban
Posts: 12
Joined: Sat Sep 01, 2018 4:13 am

Re: Interesting project: DesignSPHysics fluid simulator

Post by Steban » Fri Sep 14, 2018 9:53 pm

They used a modified interFoam solver (I have never tested it).
https://github.com/krebeljk/openInjMoldSim
Simulating a thin structure with dualsphysics can be difficult.
There is a gap between the boundary and the fluid, see page 2 this thread and
http://dual.sphysics.org/index.php/faq/#Q_13


i watch the links, thanks, now i have to read more about this for learn how to use it :geek:

Steban
Posts: 12
Joined: Sat Sep 01, 2018 4:13 am

Re: Interesting project: DesignSPHysics fluid simulator

Post by Steban » Thu Sep 20, 2018 3:55 pm

Hi group !! Good Morning everybody,

Someone know how do you modify the values of the pressure in a fluid simulation and it density? pricipally i need change the preassure for simulate the piston force pushing a fluid ...

Thanks for your time and help!

thschrader
Posts: 1432
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Interesting project: DesignSPHysics fluid simulator

Post by thschrader » Fri Sep 21, 2018 4:28 pm

Steban wrote:
Thu Sep 20, 2018 3:55 pm
Someone know how do you modify the values of the pressure in a fluid simulation and it density? pricipally i need change the preassure for simulate the piston force pushing a fluid ...
Do you mean to modify the xml-input file for dualsphysics?
Sorry Sir, but I have no theoretical background on particle-simulation.
As I said above: just for fun :)
BTW: can you post your model or a description what you want to calculate?
would be interesting to do a parellel run with openfoam and compare the results...
Thomas

Steban
Posts: 12
Joined: Sat Sep 01, 2018 4:13 am

Re: Interesting project: DesignSPHysics fluid simulator

Post by Steban » Wed Sep 26, 2018 5:07 pm

BTW: can you post your model or a description what you want to calculate?
would be interesting to do a parellel run with openfoam and compare the results...
Thomas

Thats kind of you, I interest on learn more about Open Foam you have a easy guide of the software?, by the other hand a critic description would be like this:
 
I have some problems with my injection process, I need simulate all parameters into the process

1. time x injection = 0.6s
2. Pressure of piston = 47k / cm²
3. Temperature = 110 ° c - 130 ° c
4. Material to inject = Zamak
5. density of Zamak = 6.7 g / cm³
6. Viscosity (n / mpa s) - Above 350 ° c = 0.07
7. Specific Heat = 419j / Kg. ° c
8. Liquid temperature = 400 ° C

My intention is apreciate the behavior of zamak into the mold for determinate and indetificate some break points for modify and upgrade my process ... I know that is complex, but some help about how to execute in open Foam or other free software it would be a great help... I have some models in freecad of the mould if exist any good man with interest in project.

thschrader
Posts: 1432
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Interesting project: DesignSPHysics fluid simulator

Post by thschrader » Sat Dec 15, 2018 11:31 am

There are some nice new tutorials how to install/use the
designsphysics-macro with FreeCAD.
https://www.youtube.com/user/DualSPHysics/videos

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