[GAMBIT] 4 Pipes

mehdi199 · May 11, 2016, 13:50

Hi , i have to model a geometry of 4 pipes like this

Q : can i make 4 T-Junction pipes & unite them with interface boundary ? if yes , is there any tuto on T-junction pipe ?

Thank you

-mAx- · May 12, 2016, 01:17

here a tutorial on 3 pipes intersections:
https://www.sharcnet.ca/Software/Gam...guide/tg03.htm

Why do you want to unite them? If you create them from scratch, you create 4 pipes, and unite them, that's it.
What do you mean with interfaces? (interface in gambit, is't an interface between 2 fluids, but an interface between 2 meshes which are disconnected->interpolation)

mehdi199 · May 12, 2016, 15:23

Is this a good mesh ?

http://www.filedropper.com/defaultid1508

-mAx- · May 13, 2016, 02:04

just increase number of cells in the small pipes (at least 8-10 in the diameter)
Then it is ok, but it depends on your physics, especially turbulence modelling near the walls (check theory / y+)

mehdi199 · May 13, 2016, 15:37

the fluid don't move through the circle between big pipe and the small one

please help

-mAx- · May 17, 2016, 02:26

can you post a picture?

May 11, 2016, 13:50	4 Pipes	#1
mehdi199 New Member mehdi benkabouche Join Date: Jan 2016 Posts: 7 Rep Power: 10	Hi , i have to model a geometry of 4 pipes like this Q : can i make 4 T-Junction pipes & unite them with interface boundary ? if yes , is there any tuto on T-junction pipe ? Thank you

May 12, 2016, 01:17		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	here a tutorial on 3 pipes intersections: https://www.sharcnet.ca/Software/Gam...guide/tg03.htm Why do you want to unite them? If you create them from scratch, you create 4 pipes, and unite them, that's it. What do you mean with interfaces? (interface in gambit, is't an interface between 2 fluids, but an interface between 2 meshes which are disconnected->interpolation) __________________ In memory of my friend Hervé: CFD engineer & freerider

May 13, 2016, 02:04		#4
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	just increase number of cells in the small pipes (at least 8-10 in the diameter) Then it is ok, but it depends on your physics, especially turbulence modelling near the walls (check theory / y+) __________________ In memory of my friend Hervé: CFD engineer & freerider

May 17, 2016, 02:26		#6
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	can you post a picture? __________________ In memory of my friend Hervé: CFD engineer & freerider

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May 12, 2016, 15:23		#3
mehdi199 New Member mehdi benkabouche Join Date: Jan 2016 Posts: 7 Rep Power: 10	Is this a good mesh ? http://www.filedropper.com/defaultid1508

May 13, 2016, 15:37		#5
mehdi199 New Member mehdi benkabouche Join Date: Jan 2016 Posts: 7 Rep Power: 10	the fluid don't move through the circle between big pipe and the small one please help