[Grimoli]

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Hello
How is everyone doing??
So,Im doing a OpenFoam when my geometry is based on parallel boxes,with a retangular base,as shown :

cellSet heater new boxToCell (0.049925 0.050 0 ) (0.155925 0.156 0.004)
cellSet heater add boxToCell (0.049925 0.050 0.004)(0.155925 0.052 0.018) //1
cellSet heater add boxToCell (0.049925 0.058 0.004)(0.155925 0.060 0.018) //2
cellSet heater add boxToCell (0.049925 0.066 0.004)(0.155925 0.068 0.018) //3
cellSet heater add boxToCell (0.049925 0.074 0.004)(0.155925 0.076 0.018) //4
cellSet heater add boxToCell (0.049925 0.082 0.004)(0.155925 0.084 0.018) //5
cellSet heater add boxToCell (0.049925 0.090 0.004)(0.155925 0.092 0.018) //6
cellSet heater add boxToCell (0.049925 0.098 0.004)(0.155925 0.100 0.018) //7
cellSet heater add boxToCell (0.049925 0.106 0.004)(0.155925 0.108 0.018) //8
cellSet heater add boxToCell (0.049925 0.114 0.004)(0.155925 0.116 0.018) //9
cellSet heater add boxToCell (0.049925 0.122 0.004)(0.155925 0.124 0.018) //10
cellSet heater add boxToCell (0.049925 0.130 0.004)(0.155925 0.132 0.018) //11
cellSet heater add boxToCell (0.049925 0.138 0.004)(0.155925 0.140 0.018) //12
cellSet heater add boxToCell (0.049925 0.146 0.004)(0.155925 0.148 0.018) //13
cellSet heater add boxToCell (0.049925 0.154 0.004)(0.155925 0.156 0.018) //14
cellZoneSet heater new setToCellZone heater


THe problem is that I need to separate it in 2 regions,the parallel boxes ( 1 to 14) need to be separated from the base,but Im having problem because the command boxToCell seems to be used only when the boxes are connected to the main on(the one without any number)
How I am supposed to make a region between these boxes??Please help me

[Grimoli]

I tried to do this,but it's giving a error on aleta11 ,but I dont know why!!:
Whats wrong??

cellSet heater new boxToCell (0.049925 0.050 0 ) (0.155925 0.156 0.004)
cellZoneSet heater new setToCellZone heater

cellSet aletas new boxToCell (0.049925 0.050 0.004)(0.155925 0.052 0.018) //1
cellSet aletas add boxToCell (0.049925 0.058 0.004)(0.155925 0.060 0.018) //2
cellSet aletas add boxToCell (0.049925 0.066 0.004)(0.155925 0.068 0.018) //3
cellSet aletas add boxToCell (0.049925 0.074 0.004)(0.155925 0.076 0.018) //4
cellSet aletas add boxToCell (0.049925 0.082 0.004)(0.155925 0.084 0.018) //5
cellSet aletas add boxToCell (0.049925 0.090 0.004)(0.155925 0.092 0.018) //6
cellSet aletas add boxToCell (0.049925 0.098 0.004)(0.155925 0.100 0.018) //7
cellSet aletas add boxToCell (0.049925 0.106 0.004)(0.155925 0.108 0.018) //8
cellSet aletas add boxToCell (0.049925 0.114 0.004)(0.155925 0.116 0.018) //9
cellSet aletas add boxToCell (0.049925 0.122 0.004)(0.155925 0.124 0.018) //10
cellSet aletas add boxToCell (0.049925 0.130 0.004)(0.155925 0.132 0.018) //11
cellSet aletas add boxToCell (0.049925 0.138 0.004)(0.155925 0.140 0.018) //12
cellSet aletas add boxToCell (0.049925 0.146 0.004)(0.155925 0.148 0.018) //13
cellSet aletas add boxToCell (0.049925 0.154 0.004)(0.155925 0.156 0.018) //14
cellZoneSet aletas new setToCellZone aletas

cellSet topAir clear
cellSet topAir add cellToCell heater
cellSet topAir add cellToCell aletas
cellSet topAir invert
cellZoneSet topAir new setToCellZone topAir

[Grimoli]

someone help please =/

[nimasam]

Dear,
look carefully at chtmultiRegion tutorial, you will find how to recall the space between box, in brief
you need a create a CellSet, then add to this CellSet all present boxes, then invert cellSet to choose remain cells

[Grimoli]

what does the function invert does??

[nimasam]

consider you have two sets A and B, which B is a sub-set of A, when you use invert B,
means all cells which are in A but not in B

[Grimoli]

OKay,i have a problem now that i cant solve!!I have 2 regions in the same place.How do I erase a part of it??Is there a way I can do it ??I have 2 regions on the same place,i want to clear to it so the program doesnt crash.

[nimasam]

look at tutorials its easier way to find each dictionary how works , however you can use command remove, to remove one cellSet, or easily you can go to polyMesh in setSet folder and see whats your cellSet name is and remove it manually

[Grimoli]

i managed my problem thanks you
Where I can find the chtmultiregion tutorial??I tried to find it on google and on open foam website but i didnt found it.Any links??I want to improve my skills at OPenFOAM

[nimasam]

look at OpenFOAM tutorials the address is :

/tutorials/heatTransfer/chtMultiRegionFoam