CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Meshing & Mesh Conversion

[blockMesh] multiregion mesh with blockMesh

Register Blogs Members List Search Today's Posts Mark Forums Read

Like Tree14Likes

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 20, 2013, 11:40
Default blockMeshDict
  #41
Member
 
sandy
Join Date: Mar 2013
Location: Cardiff, UK
Posts: 74
Rep Power: 13
sandy13 is on a distinguished road
Quote:
Originally Posted by Yosmcer View Post
Hello Sandy,

So downer face is the outlet patch.

Maybe giving your blockMeshDict file may help to advice you.

It seems that other people already tried to have internal walls, hope this post can help:
Internal walls of zero thickness

Good luck with your design.
Dear MartinB,
Thank you very much for your response, Yes the downer face is the outlet patch. I attached my block mesh dict. and about createBaffles and mergeOrSplitBaffles, I do not know how to deal with these utility. If you can direct me please I would be very grateful..
Sandy,

FoamFile
{
version 2.0;
format ascii;
class dictionary;
object blockMeshDict;
}

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

convertToMeters 0.001;

vertices
(

(-1.6 -1.6 464)//0
(1.6 -1.6 464)//1
(1.6 1.6 464)//2
(-1.6 1.6 464)//3

(-1.6 -1.6 500)//4
(1.6 -1.6 500)//5
(1.6 1.6 500)//6
(-1.6 1.6 500)//7

(-10.5 -10.5 464)//8
(10.5 -10.5 464)//9
(10.5 10.5 464)//10
(-10.5 10.5 464)//11

(-10.5 -10.5 500)//12
(10.5 -10.5 500)//13
(10.5 10.5 500)//14
(-10.5 10.5 500)//15

(-20 -20 464)//16
(20 -20 464)//17
(20 20 464)//18
(-20 20 464)//18

(-20 -20 500)//20
(20 -20 500)//21
(20 20 500)//22
(-20 20 500)//23

(-64 -64 464)//24
(64 -64 464)//25
(64 64 464)//26
(-64 64 464)//27

(-64 -64 500)//28
(64 -64 500)//29
(64 64 500)//30
(-64 64 500)//31

(-64 -64 0)//32
(64 -64 0)//33
(64 64 0)//34
(-64 64 0)//35



(-20 -20 464)//36 // for injector walls
(20 -20 464)//37 // for injector walls
(20 20 464)//38 // for injector walls
(-20 20 464)//39 // for injector walls

(-20 -20 500)//40 // for injector walls
(20 -20 500)//41 // for injector walls
(20 20 500)//42 // for injector walls
(-20 20 500)//43 // for injector walls

);

blocks
(
hex (0 1 2 3 4 5 6 7) (10 10 10) simpleGrading (1 1 1) //0 //fuel inlet
hex (10 11 3 2 14 15 7 6) (10 10 10) simpleGrading (1 1 1) //1 //fuel inlet thickness
hex (11 8 0 3 15 12 4 7) (10 10 10) simpleGrading (1 1 1) //2 //fuel inlet thickness
hex (8 9 1 0 12 13 5 4) (10 10 10) simpleGrading (1 1 1) //3 //fuel inlet thickness
hex (9 10 2 1 13 14 6 5) (10 10 10) simpleGrading (1 1 1) //4 //fuel inlet thickness

hex (18 19 11 10 22 23 15 14) (10 10 10) simpleGrading (1 1 1) //5 //air inlet patch from hex 5
hex (19 16 8 11 23 20 12 15) (10 10 10) simpleGrading (1 1 1) //6 //air inlet patch from hex 6
hex (16 17 9 8 20 21 13 12) (10 10 10) simpleGrading (1 1 1) //7 //air inlet patch from hex 7
hex (17 18 10 9 21 22 14 13) (10 10 10) simpleGrading (1 1 1) //8 //air inlet patch from hex 8

hex (26 27 19 18 30 31 23 22) (10 10 10) simpleGrading (1 1 1) //9 // upper surface wall
hex (27 24 16 19 31 28 20 23) (10 10 10) simpleGrading (1 1 1) //10 // upper surface wall
hex (24 25 17 16 28 29 21 20) (10 10 10) simpleGrading (1 1 1) //11 // upper surface wall
hex (25 26 18 17 29 30 22 21) (10 10 10) simpleGrading (1 1 1) //12 // upper surface wall

hex (32 33 34 35 24 25 26 27) (10 10 10) simpleGrading (1 1 1) //13 // atomization domain



hex (36 37 38 39 40 41 42 43) (2 2 2) simpleGrading (1 1 1) //5 //for injector walls
);


edges
(

arc 6 7 (0 2.1 500)
arc 7 4 (-2.1 0 500)
arc 4 5 (0 -2.1 500)
arc 5 6 (2.1 0 500)

arc 2 3 (0 2.1 464)
arc 3 0 (-2.1 0 464)
arc 0 1 (0 -2.1 464)
arc 1 2 (2.1 0 464)

arc 14 15 (0 15 500)
arc 15 12 (-15 0 500)
arc 12 13 (0 -15 500)
arc 13 14 (15 0 500)

arc 10 11 (0 15 464)
arc 11 8 (-15 0 464)
arc 8 9 (0 -15 464)
arc 9 10 (15 0 464)

arc 22 23 (0 27 500)
arc 23 20 (-27 0 500)
arc 20 21 (0 -27 500)
arc 21 22 (27 0 500)

arc 18 19 (0 27 464)
arc 19 16 (-27 0 464)
arc 16 17 (0 -27 464)
arc 17 18 (27 0 464)

arc 26 27 (0 90 464)
arc 27 24 (-90 0 464)
arc 24 25 (0 -90 464)
arc 25 26 (90 0 464)

arc 30 31 (0 90 500)
arc 31 28 (-90 0 500)
arc 28 29 (0 -90 500)
arc 29 30 (90 0 500)

arc 34 35 (0 90 0)
arc 35 32 (-90 0 0)
arc 32 33 (0 -90 0)
arc 33 34 (90 0 0)

arc 38 39 (0 27 464)
arc 39 36 (-27 0 464)
arc 36 37 (0 -27 464)
arc 37 38 (27 0 464)

arc 42 43 (0 27 500)
arc 43 40 (-27 0 500)
arc 40 41 (0 -27 500)
arc 41 42 (27 0 500)




);

boundary

(
inlet_fuel
{
type patche;
faces
(
(4 5 6 7)

);
}

inlet_air
{
type patches;
faces
(
(22 23 15 14)
(23 20 12 15)
(20 21 13 12)
(21 22 14 13)
);
}

outlet
{
type patche;
faces
(
(32 35 34 33)
);
}

injector
{
type walls;
faces
(
(36 40 43 39)
(39 43 42 38)
(37 38 42 41)
(36 37 41 40)
);
}

walls
{
type walls;
faces

(
(32 24 27 35) //left wall
(24 28 31 27)
(32 33 25 24) // front
(24 25 29 28)
(33 34 26 25) //right
(25 26 30 29)
(35 27 26 34)// (19 18 22 23)

(27 31 30 26)

(30 31 23 22) // upper patche
(31 28 20 23) // upper patche
(28 29 21 20) // upper patche
(29 30 22 21) // upper patche



(14 15 7 6) // patche wall between the fuel and the air
(15 12 4 7) // patche wall between the fuel and the air
(12 13 5 4) // patche wall between the fuel and the air
(13 14 6 5) // patche wall between the fuel and the air


);
}
);



mergePatchPairs
(
);

// ************************************************** *********************** //
sandy13 is offline   Reply With Quote

Old   May 20, 2013, 12:13
Default
  #42
Member
 
Yosmcer Mocktai
Join Date: Apr 2013
Location: Behind a computer
Posts: 50
Rep Power: 16
Yosmcer will become famous soon enough
I'm not MartinB

Google "createBaffles" => CreateBaffles on the OpenFOAM Wiki

And an example can be found in $FOAM_TUTORIALS/heatTransfer/buoyantSimpleFoam/circuitBoardCooling

In this tutorial, first, blockmesh is used with a simple definition, than topoSet to set the baffles conditions, and finally createBaffles.

The different commands are in the Allrun file.
topoSet use the dictionary /system/topoSetDict

I hope this example can help you to understand how you can apply this to your case.
You can find other example using "grep -r createBaffles $FOAM_TUTORIALS" in a terminal (grep is a linux command).

I never used createBaffles, so I cannot really help you more than this.

Have a good afternoon.
Yosmcer is offline   Reply With Quote

Old   May 20, 2013, 13:01
Default
  #43
Member
 
sandy
Join Date: Mar 2013
Location: Cardiff, UK
Posts: 74
Rep Power: 13
sandy13 is on a distinguished road
Quote:
Originally Posted by Yosmcer View Post
I'm not MartinB

Google "createBaffles" => CreateBaffles on the OpenFOAM Wiki

And an example can be found in $FOAM_TUTORIALS/heatTransfer/buoyantSimpleFoam/circuitBoardCooling

In this tutorial, first, blockmesh is used with a simple definition, than topoSet to set the baffles conditions, and finally createBaffles.

The different commands are in the Allrun file.
topoSet use the dictionary /system/topoSetDict

I hope this example can help you to understand how you can apply this to your case.
You can find other example using "grep -r createBaffles $FOAM_TUTORIALS" in a terminal (grep is a linux command).

I never used createBaffles, so I cannot really help you more than this.

Have a good afternoon.
Dear Yosmcer,
Thanks for your help and I am sorry about missing your name, I am relay in bad day.
Sandy,
sandy13 is offline   Reply With Quote

Old   July 19, 2013, 06:25
Default
  #44
Senior Member
 
Mojtaba.a's Avatar
 
Mojtaba Amiraslanpour
Join Date: Jun 2011
Location: Tampa, US
Posts: 308
Rep Power: 15
Mojtaba.a is on a distinguished road
Send a message via Skype™ to Mojtaba.a
Quote:
Originally Posted by Budlo View Post
Martin :
May be you can post a sketch of your geometry so that I can give advice on the appropriate blockMesh definition...
Martin.

Hi Martin
thanks a lot for your complete explain.
I want simulate a flow over a solid that solid has conduction in "MultiRegionHeater". the boundary between them is conjugate .

I do this procceger :
1- Make mesh in Gambit and set two region,solid and fluid, with "Internal" boundary condition at conjugate boundary same the example of solver.
2- code : runApplication fluentMeshToFoam Mymesh.msh -writeSets
3- code : runApplication setsToZones -noFlipMap
4- code : runApplication splitMeshRegion -cellZones -overwrite
5- Remove extra boundary condition in each region at 0 file (Its code is in Allrun).
5- Creat all files, boundary condition and changeDictionaryDict.
6- Make log.changeDEctionaryDic (Its code is in Allrun)
7- code : chtMultiRegionFoam
It is work for free convection but for force convection divergence.

Best Regards
dear namdar do you put all conjugate faces into one boundary and set the type to internal?

have you connected faces?

can you get region1_to_region2 type boundary conditions for each region in constant/regionName/boundary file?

Thank you
__________________
Learn OpenFOAM in Persian
SFO (StarCCM+ FLUENT OpenFOAM) Project Team Member
Complex Heat & Flow Simulation Research Group
If you can't explain it simply, you don't understand it well enough. "Richard Feynman"
Mojtaba.a is offline   Reply With Quote

Old   July 21, 2013, 15:14
Default
  #45
Senior Member
 
Mojtaba.a's Avatar
 
Mojtaba Amiraslanpour
Join Date: Jun 2011
Location: Tampa, US
Posts: 308
Rep Power: 15
Mojtaba.a is on a distinguished road
Send a message via Skype™ to Mojtaba.a
Quote:
Originally Posted by Mojtaba.a View Post
dear namdar do you put all conjugate faces into one boundary and set the type to internal?

have you connected faces?

can you get region1_to_region2 type boundary conditions for each region in constant/regionName/boundary file?

Thank you
I got answers myself, please refer to this post:

http://www.cfd-online.com/Forums/ope...tml#post441072

best
__________________
Learn OpenFOAM in Persian
SFO (StarCCM+ FLUENT OpenFOAM) Project Team Member
Complex Heat & Flow Simulation Research Group
If you can't explain it simply, you don't understand it well enough. "Richard Feynman"
Mojtaba.a is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
[mesh manipulation] How to write cellSet for different regions in constant/polyMesh/sets Struggle_Achieve OpenFOAM Meshing & Mesh Conversion 3 June 17, 2019 10:29
[snappyHexMesh] Snappyhex mesh: poor inlet mesh Swagga5aur OpenFOAM Meshing & Mesh Conversion 1 December 3, 2016 17:59
Star CCM Overset Mesh Error (Rotating Turbine) thezack Siemens 7 October 12, 2016 12:14
[snappyHexMesh] SnappyHexMesh for internal Flow vishwa OpenFOAM Meshing & Mesh Conversion 24 June 27, 2016 09:54
[snappyHexMesh] SnappyHexMesh no layers and no decent mesh for complex geometry pizzaspinate OpenFOAM Meshing & Mesh Conversion 1 February 25, 2015 08:05


All times are GMT -4. The time now is 03:56.