|
[Sponsors] |
June 8, 2013, 06:31 |
helical coil heat exchanger
|
#1 |
New Member
Sarthak Nigam
Join Date: Jun 2013
Posts: 7
Rep Power: 13 |
I am working on a helical coil heat exchanger ( Tube side : Helical coil and Shell: cylindrical)
For solving the temperature profile in Fluent, which model should I use: Case -1: Both shell side and tube side flow is laminar. But as we know, secondary flow develop in helical coil due to centrifugal force. Because of these secondary flow should I use k-epsilon model or laminar model. Case-2: Shell side flow is turbulent and tube side is laminar. Which model should I use, K-epsilon or laminar. Case-3: Is there any way I can define different models for different flow patterns on tube side and shell side. please reply |
|
June 9, 2013, 07:17 |
|
#2 | |
Senior Member
Rick
Join Date: Oct 2010
Posts: 1,016
Rep Power: 27 |
Quote:
Or you can use a transitional turbulent model, but take care to y+ values. Case2: turbulent in shell and laminar in tube; same comment as above for the tube zone. It is possible to simulate one zone with laminar model and one zone with a turbulent one. Make 2 zones (shell and coil) in pre-processor, then in fluent, choose a turbulent model, but in cell zones, for the laminar zone, check the laminar box. Daniele |
||
January 13, 2016, 07:00 |
helical heat exchanger
|
#3 |
New Member
supriya mishra
Join Date: Jan 2016
Posts: 1
Rep Power: 0 |
can u plzz tell me how to draw the helical shape tube in ansys dm..
plzzz reply.. |
|
January 14, 2016, 04:02 |
|
#4 |
Senior Member
Join Date: Aug 2014
Location: UK
Posts: 213
Rep Power: 13 |
Though you would find many tutorials for this and procedure might not differ from other 3D CAD softwares; however, generally you could draw a desired 3D (sketch) helix profile (originating from global origin) and a circle (or any planar shape that you would like) on either of the ends with it's centre at the termination of the 3D helix line.. sweep the circle while selecting the helix line as the path..
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
[ANSYS Meshing] meshing for dual cell heat exchanger | sandeep sethi | ANSYS Meshing & Geometry | 0 | December 29, 2012 11:19 |
[GAMBIT] double pipe heat exchanger with helical fin around inner tube | mozafarie | ANSYS Meshing & Geometry | 5 | November 7, 2012 06:02 |
design of helical coil heat exchanger | turbofx35 | ANSYS | 0 | May 5, 2012 02:37 |
UDF for Heat Exchanger model | francois louw | FLUENT | 2 | July 16, 2010 03:21 |
Convective Heat Transfer - Heat Exchanger | Mark | CFX | 6 | November 15, 2004 16:55 |