gambit geometry
 

sir i want create a doublr pipe heat exchanger geometry in gambit and analysing it in to fluent sir please give me a tutorial so that i learn how to create a geometry of double pipe heat exchanger and solve it by fluent i have the version og gambit 2.3.16 and fluent 6.3.26.

double pipe geometry
 

sir i need a specific step by step tutorial how to design a shell and tube or double pipe heat exchanger in gambit sir please help me. and if u can arrange the tutorial
how this geometry setup in fluent and solve it or post process it..
sir please help me..

post a sketch of what you want

sketch
 

Attachment 35210

Attachment 35211

Attachment 35212



sir this is my problem sketch sir i have problem in meshing of hollow part and also how i decide the zone types in my double pipe problem so that it is solve in fluent
sir please reply me

sir i am making this geometry by using volume command button create 4 cylinder and then use the boolean operation but after that their is problem occuring in meshing of hollow part and not defining the correct zone type to set ut the boundary condition in fluent.

sir what should i do please help me and guide me so i solve my problem

If I understand correctly you created 2 annular cylinders.
The error you get while meshing (third picture) comes from a link you created.
I don't think you need a link and therefore you should delete it, and remesh your geometry.
Once it is donde you can apply your boundary conditions.
For a basic flowfield within your cylinders you only need one velociyt inlet (or pressure inlet), and one pressure outlet.
All other surfaces without defined BC will be treated as a wall

sir i want to flow of hot fluid in inner tube and cold fluid inside the outer tube sir this is the double tube heat exchanger but this is not working and i also remove the link tha u told but still problem occuring in meshing of hollow part and sir i also don't under stand how i define the correct zone type

sir lots of faces in my problem comming in picture then how i decided that this face is inlet and this face is outlet . sir what condition is given to the inner tube along its length so fluid is flowing throughout its length

sir will u send me a jou file of doble tube heat exchanger with mesh in hollow part with specify the zone type

*delete all your meshes
*remove all the links
*remesh your cylinders
*apply your BC (you pick the desired face by selecting it with the mouse)

>> with your actual configuration, I don't see how your heat exchanger could work since you don't have any connection between both cylinders. Fluent will compute both cylinders separately
>> if fluids are the same in each cylinder you can handle your problem with one fluid domain. If not you need to create 2 fluid domains

https://www.sharcnet.ca/Software/Gam...guide/mg04.htm

sir will u give me any tips so that this configuration work as a double tube heat exchanger and solved by fluent both cylinder simultaneously.
and problem is still occuring in meshing of both the hollow part

sir is there any specific type solver i am select in gambit for this problem

What kind of error brings you Gambit?

How your heat exchanger looks like in the reality?

[ATTACH]Attachment 35590[/ATTACH]Attachment 35590
sir i am creted this wire frame model in gambit for double pipe heat exchanger
then i converted it into four volumes
V1 :inner fluid (continnuam type fluid)
V2 :inner pipe that give a solid continuuam type
V3 : outer fluid
V4 : outer pipe that also i give the solid continnuam
but sir i am not able to decided that in which region i give the interface boundary type and interior bopundary type so this model exchanges heat from hot fluid to cold fluid

sir please help to defining the right type boundary condition so this mesh file the read in to fluent

can you mesh your volumes without error=
if not, display the error
on your pictures, there is no volume (only edges)

yes sir there is only edges then i select the inner edges
and form a volume 1 then again i select upper edges with upper face of inner part the form a volume 2 this prosedure is repeated up to forming volume 4

sir i can mesh my all volumes using hex/wedge element and copper scheme
but i want to exchanges heat from inner hot fluid to solid wall and then it leads to heat transfer by the cold fluid in volume 3 that means their is solid zone in betweenn two fluid region and again a solid zone that is volume 4
sir please help me how i do this
thankyou very much sir for your kind replies
sir tell me if u want required more information from me

I would work step by step.
Firsr don't creat solid volume, only fluid, and be sure both mesh are ok (run simple computation)
once it is done, you can build the solid domain. But I have no experience in soldi conduction. Check fluent solver
https://www.sharcnet.ca/Software/Flu...e567.htm#86350

Attachment 35592

Attachment 35593

Attachment 35594sir this the procedure i follow for makin this geometry in second image secting the edge procedure for volume 2 this correct or not how give the interface and interior type boundary condition in fluent so this exchanges heat.