Finned tube Modelling

csmistry · July 4, 2009, 01:28

Friends
i always do experiment for different problems.. Presently i am doing analysis of finned tube.

Problems are:
1. How to model gas passage, solid(tube ) and water passage(inside) tube. i used the concept of frozen option for gas passage and neglected tube surface second domain i select for water that is soli (add material-extrude) but... in case if i want all the 3 domains seperate what steps i follow...!!
2. for meshing i choose regions like GSAINLET,GASOUTLET,WATERIN,WATEROUT,INSIDE TUBE-SYM-1 SYM2,OUTERWALLGAS AND OUTERWALL GAS, FOR FINNED SURFACE I CHOOSE TWO WALLS OPTION... AM I GOING RIGHT ..

ghorrocks · July 5, 2009, 07:49

I don't understand what you are asking.

Your first question is weird. This sounds like a straightforward CHT simulation and you just model the air, liquid and solid as different domains. Forget about frozen options. A some tutorials on CHT simulations. (CHT = Conjugate heat transfer,ie heat transfer with both solid and fluid domains included)

I don't know what you mean by your second question. Are you referring to the interface between solid and fluid domains? That is just a domain interface, either 1to1 or GGI.

Glenn Horrocks

July 4, 2009, 01:28	Finned tube Modelling	#1
csmistry Member mistry Join Date: Apr 2009 Location: India Posts: 69 Rep Power: 17	Friends i always do experiment for different problems.. Presently i am doing analysis of finned tube. Problems are: 1. How to model gas passage, solid(tube ) and water passage(inside) tube. i used the concept of frozen option for gas passage and neglected tube surface second domain i select for water that is soli (add material-extrude) but... in case if i want all the 3 domains seperate what steps i follow...!! 2. for meshing i choose regions like GSAINLET,GASOUTLET,WATERIN,WATEROUT,INSIDE TUBE-SYM-1 SYM2,OUTERWALLGAS AND OUTERWALL GAS, FOR FINNED SURFACE I CHOOSE TWO WALLS OPTION... AM I GOING RIGHT ..

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July 5, 2009, 07:49		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	I don't understand what you are asking. Your first question is weird. This sounds like a straightforward CHT simulation and you just model the air, liquid and solid as different domains. Forget about frozen options. A some tutorials on CHT simulations. (CHT = Conjugate heat transfer,ie heat transfer with both solid and fluid domains included) I don't know what you mean by your second question. Are you referring to the interface between solid and fluid domains? That is just a domain interface, either 1to1 or GGI. Glenn Horrocks