[m7566]

v2.1.1.jpg

Originally Posted by m7566

Attachment 35592

Attachment 35593

Attachment 35594

sir 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.

sir do you have any tutorial for deciding boundary condition for a double tube heat exchanger in gambit

[m7566]

v2.1.1.jpg
sir will u more elaborate ur last reply thai first create fluid region step by step.
and this attachment tells u i am create this geometry that is volume 1,2,3,4
but sir i have lack of experince to definig the this type of thermal boundary conditions please help me how i decide the diffrent boundary condition and continnum type in gambit so it is read in to fluent correctly

[-mAx-]

this is exactly the point: I am not sure you need an interface for solid conduction.

[m7566]

Originally Posted by -mAx-

this is exactly the point: I am not sure you need an interface for solid conduction.

sir it means their is no help available for me.
sir how i am proceding plese do some thing so i am solve my problem in fluent please sir help me.

[-mAx-]

https://www.google.fr/?gws_rd=ssl#q=...ction+tutorial
there is one video, but I cannot access it from office

[ghost82]

Hi,
You seem quite polite but please don't ask things such as "make for you a complete tutorial" or a "step by step" guide. Do you know how much time is needed to make a detailed step by step tutorial?
Coming to your problem: if you want to model also the solid thickness of the pipes draw them as you did in the first pictures. Create the 4 volumes (4 1/4 of pipes): the volumes have to share the same adjacent face.
Assign continuum zone types:
https://www.sharcnet.ca/Software/Gam...guide/mg04.htm

2 different FLUID zones where the cold and hot fluids flow and 2 different SOLID zones for the thickness of the pipes.
Assign boundary conditions: link the periodic faces before meshing and assign them PERIODIC boundary condition, then velocity or pressure inlet/outlet for the cold flow and velocity or pressure inlet/outlet for the hot flow (don't use velocity inlet/outlet); assign WALL boundary conditions for walls.
Then mesh the volumes.
When the mesh will be imported into fluent shadow walls will be automatically created to enable heat transfer between fluid and solid regions.

Daniele

[BARKAT]

A cubic mesh of which edges having full cylindrical forms
this mesh is placed inside a rectangular channel
I want to get information about the geometry of this system and how to make the mesh

thank you