make Box by use of surrounding faces

MikeyMike · July 20, 2011, 10:36

Dear users,

I am quite new with OF but I will try to follow your kindly advices.
My problem is as follows:

I want to simulate a bearing chamber consisting of a rotor (inner face) and with a liquid (alpha = 1) volume(!)layer at the stator (outer face). I was adviced to have a look at the damBreak tutorial. As I imported a mesh from Ansys Icem, I can´t really relate to the original boxtoCell entry in system/setFieldsDict.
My imagination of solving the problem is to create a volumebox by the use of four enclosing faces and to set this "field" to "value alpha = 1" as an initial value.

My question is how to do so and how to bring in "setSet, faceSet, boxToFace etc.". Which of them do I need and what do they do??

Thank you in advance for some helpful posts or links!
Cheers, Mike.

Hisham · September 29, 2011, 09:20

Hi Mike,

The answer is right! The boxToCell will assign a value of alpha = 1 for the problem domain (i.e. all cells) that can be found inside a box that you specify with the coordinates of two points. If the outer shape of the volume, for which alpha =1, is not composed of rectangles or domain boundaries, then you should consider a zoneToCell approach or funkySetFields.

Regards
Hisham

July 20, 2011, 10:36	make Box by use of surrounding faces	#1
MikeyMike New Member Join Date: Apr 2011 Posts: 10 Rep Power: 15	Dear users, I am quite new with OF but I will try to follow your kindly advices. My problem is as follows: I want to simulate a bearing chamber consisting of a rotor (inner face) and with a liquid (alpha = 1) volume(!)layer at the stator (outer face). I was adviced to have a look at the damBreak tutorial. As I imported a mesh from Ansys Icem, I can´t really relate to the original *boxtoCell* entry in system/setFieldsDict. My imagination of solving the problem is to create a volumebox by the use of four enclosing faces and to set this "field" to "value alpha = 1" as an initial value. My question is how to do so and how to bring in "setSet, faceSet, boxToFace etc.". Which of them do I need and what do they do?? Thank you in advance for some helpful posts or links! Cheers, Mike. Last edited by MikeyMike; July 29, 2011 at 14:38.

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September 29, 2011, 09:20		#2
Hisham Senior Member Hisham Elsafti Join Date: Apr 2011 Location: Braunschweig, Germany Posts: 257 Blog Entries: 10 Rep Power: 17	Hi Mike, The answer is right! The boxToCell will assign a value of alpha = 1 for the problem domain (i.e. all cells) that can be found inside a box that you specify with the coordinates of two points. If the outer shape of the volume, for which alpha =1, is not composed of rectangles or domain boundaries, then you should consider a zoneToCell approach or funkySetFields. Regards Hisham