CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Flow and Balancing Between Cells

Register Blogs Community New Posts Updated Threads Search

Like Tree1Likes
  • 1 Post By FMDenaro

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 2, 2016, 10:35
Default Flow and Balancing Between Cells
  #1
New Member
 
Michel_sharp's Avatar
 
Michel Van de gaer
Join Date: Oct 2009
Location: Brussels
Posts: 16
Rep Power: 17
Michel_sharp is on a distinguished road
Hello,

I curious if there's an application that uses the edges of meshes as channels of flow. Whereby the tension between the cells defines the flow within the cells. The 'flow' would be like a current, in such a way that circuits emerge after a time out of a random starting position. Also cells/meshes could shrink or expand based on a balancing tension between them. I have added some sketches to give a rough idea.

Does such 'Computer Flow Dynamic' software exist? If not, could there be an extension added to OpenFOAM whereby there is interaction with the edges (flow) between the cells? This isn't exactly something for modelling fluids, but more for something like the flow and interaction between cells in (imaginary) organic systems. I'm not sure if I'm here at the right place, but I thought that there might be possibly a connection to make this happen.

Thanks in advance for your feedback!

Krgds,

Michel




__________________
Dance…even if you have nowhere to do it but in your own living room.
Mary Schmich (Wear Sunscreen - Baz Luhrmann)
Michel_sharp is offline   Reply With Quote

Old   October 2, 2016, 13:01
Default
  #2
Senior Member
 
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,849
Rep Power: 73
FMDenaro has a spectacular aura aboutFMDenaro has a spectacular aura aboutFMDenaro has a spectacular aura about
I am not sure of what you are exactly asking for ... you look for something like the immersed boundary method or interface method for penetrating flow between membrane?
FMDenaro is offline   Reply With Quote

Old   October 2, 2016, 15:16
Default
  #3
New Member
 
Michel_sharp's Avatar
 
Michel Van de gaer
Join Date: Oct 2009
Location: Brussels
Posts: 16
Rep Power: 17
Michel_sharp is on a distinguished road
Quote:
Originally Posted by FMDenaro View Post
I am not sure of what you are exactly asking for ... you look for something like the immersed boundary method or interface method for penetrating flow between membrane?
Hi FMDenaro,


Thank you for your question/suggestions. Yes, the latter seems to be going in the right direction. It lead me to this interesting paper: Analysis and applications of the Voronoi Implicit Interface Method (pdf)



It has Voronoi-cells and there are pressure differences, but what I had in mind is slightly more like what's done with Voronoi-cells in this gameblog-post, Polygonal Map Generation for Games, where a river is created between the cells with a Hill climbing method.



--

So the goals it to have a type of double dynamic/sliding/moving-mesh-system.



With one set of cells for the solid volume, and a neighbouring one for flow/liquid.



Similar to cell tissue in biology:



Regulated by a communicating vessels system; where flow is influenced by the pressure between volume-cells; and volume-cells can expand or shrink based on the amount of surrounding fluid; a whole system of connected springs.



Not sure if this is helps to give you a better idea.

Brgds,

Michel
__________________
Dance…even if you have nowhere to do it but in your own living room.
Mary Schmich (Wear Sunscreen - Baz Luhrmann)
Michel_sharp is offline   Reply With Quote

Old   October 2, 2016, 15:37
Default
  #4
Senior Member
 
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,849
Rep Power: 73
FMDenaro has a spectacular aura aboutFMDenaro has a spectacular aura aboutFMDenaro has a spectacular aura about
This is not my field of experience, but I remember I read something like this...
I suggest to check for article in journals like JCP, JFM, PoF ...
I think you should focus on the interface method as it supplies the pressure difference by considering the mass.
FMDenaro is offline   Reply With Quote

Old   October 2, 2016, 15:52
Default
  #5
New Member
 
Michel_sharp's Avatar
 
Michel Van de gaer
Join Date: Oct 2009
Location: Brussels
Posts: 16
Rep Power: 17
Michel_sharp is on a distinguished road
Quote:
Originally Posted by FMDenaro View Post
This is not my field of experience, but I remember I read something like this...
I suggest to check for article in journals like JCP, JFM, PoF ...
I think you should focus on the interface method as it supplies the pressure difference by considering the mass.
Ok, thanks. One last question, is such a method far removed from what OpenFoam or any of the other software discussed here on the forum can do?
__________________
Dance…even if you have nowhere to do it but in your own living room.
Mary Schmich (Wear Sunscreen - Baz Luhrmann)
Michel_sharp is offline   Reply With Quote

Old   October 2, 2016, 16:01
Default
  #6
Senior Member
 
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,849
Rep Power: 73
FMDenaro has a spectacular aura aboutFMDenaro has a spectacular aura aboutFMDenaro has a spectacular aura about
Quote:
Originally Posted by Michel_sharp View Post
Ok, thanks. One last question, is such a method far removed from what OpenFoam or any of the other software discussed here on the forum can do?

sorry but I don't know...
at present I am aware of Karalit using the IB method.
sbaffini likes this.
FMDenaro is offline   Reply With Quote

Old   October 2, 2016, 16:14
Default
  #7
New Member
 
Michel_sharp's Avatar
 
Michel Van de gaer
Join Date: Oct 2009
Location: Brussels
Posts: 16
Rep Power: 17
Michel_sharp is on a distinguished road
Quote:
Originally Posted by FMDenaro View Post
sorry but I don't know...
at present I am aware of Karalit using the IB method.
Alright, no problem, I can use the search-tab at the top of this page for some references on 'interface method'.
__________________
Dance…even if you have nowhere to do it but in your own living room.
Mary Schmich (Wear Sunscreen - Baz Luhrmann)
Michel_sharp is offline   Reply With Quote

Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[snappyHexMesh] unsteady flow around a square cylindier snappy problems triball OpenFOAM Meshing & Mesh Conversion 4 February 20, 2016 17:10
Flowrate at inlet and outlet not balancing ( centrifugal pump ) -- pimpleDyMFoam coolcrasher OpenFOAM Running, Solving & CFD 20 November 25, 2015 06:33
[snappyHexMesh] Collapsing Layers Tim_Simon OpenFOAM Meshing & Mesh Conversion 5 August 2, 2015 23:51
[snappyHexMesh] SnappyHexMesh Internal Flow Example (Diesel Injector) Irish09 OpenFOAM Meshing & Mesh Conversion 23 July 15, 2013 08:45
VOF fluxes not balancing even it's converging..urgent please!!! eers Main CFD Forum 5 July 13, 2010 15:56


All times are GMT -4. The time now is 23:32.