|
[Sponsors] |
![]() |
![]() |
#1 |
Guest
Posts: n/a
|
Hi
I am just woundering how good fluent 4.5 & 5.0 itself is, in modeling free convection, when you effectively have no inflow/outflow bounday condition except for wall BCs. Is fluent 4.5 & 5.0 capable of modelling such flow?. Regards Oliver |
|
![]() |
![]() |
![]() |
#2 |
Guest
Posts: n/a
|
Dear Oliver
As far as my experience is concerned, you can model free convection by both Fluent 4.5 and Fluent 5.0. For free convection with low Rayleigh number laminar flow(say, Ra < 1.e6), both of 4.5 & 5.x have shown good convergence. For high Rayleigh number laminar flow and turbulent flow(say, Ra > 1.e8), Fluent 4.5 has shown very good convergence than Fluent 5.x. And if you have convergence problem for high Rayleigh number flow, you might have good convergence if you use time-marching method. The above Rayleigh number is based on free convection in the square cavity. Sincerely, Jinwook |
|
![]() |
![]() |
![]() |
#3 |
Guest
Posts: n/a
|
thanks
oliver |
|
![]() |
![]() |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Free Stream Temperature in natural convection problem | tomcatbobby | FLUENT | 2 | January 27, 2011 05:41 |
URGENT!!!! Combined free convection | Mahyar | FLUENT | 0 | August 13, 2008 00:39 |
CFX-5.5 simulating air free convection | Dustin Lee | CFX | 0 | April 16, 2003 02:54 |
Free Convection in STAR-CD | George Hampel | Siemens | 0 | November 15, 2000 23:38 |
free convection heat transfer from a heated horizontal surface through a liquid to a thin cooled fin | Kaushik | FLUENT | 1 | May 8, 2000 06:47 |