|
[Sponsors] |
April 11, 2017, 22:31 |
Radiation model selection
|
#1 |
New Member
Juyeong, Jeong
Join Date: Apr 2017
Posts: 3
Rep Power: 9 |
hi, i'm in problem with selecting the radiation model in fluent.
The model is heated for 3 min. by radiation heater in the room as you can see below. I solved this model with S2S radiation model. but temperature at the specimen's surface was equal to the others although these specimens have different depth. My question is whether S2S model considers inverse-square raw and Will i use another radiation model? (then which model do you recommend ?) I'm waiting for your answer. Thans. Last edited by IGOTIT; April 12, 2017 at 07:50. |
|
April 12, 2017, 03:18 |
|
#2 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,737
Rep Power: 66 |
The inverse square law is for a spherically expanding front coming from a point source. A surface is not a point source.
The surface 2 surface model is much more general than the inverse square law. You can compare the viewfactors for the three cases. They will be similar. |
|
April 12, 2017, 03:39 |
|
#3 | |
New Member
Juyeong, Jeong
Join Date: Apr 2017
Posts: 3
Rep Power: 9 |
Quote:
according to your comments, that the View factors are similar is why s2s model results are same. Right? But i have more question. Actually I performed this problem with s2s and p-1 model. And the results are quite different between two models. P-1 model shows different temperature. (the deeper depth specimen has lower temperature.) s2s model shows same temperature as mentioned above. I don't know why these results are different. I'm waiting for your opinion. thanks. |
||
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Using radiation model for simulation of flat plate solar collector | marjanbn | FLUENT | 1 | February 24, 2017 17:22 |
Overflow Error in Multiphase Modelling with Two Continuous Fluids | ashtonJ | CFX | 6 | August 11, 2014 14:32 |
How model radiation of both solid wall and fluid£¿ | Harry Qiu | FLUENT | 2 | February 3, 2013 23:04 |
problem in glass radiation model (DO model) | wunan805 | FLUENT | 0 | October 10, 2012 05:06 |
Help: Radiation model | MANOJKUMAR | FLUENT | 4 | November 24, 2005 02:45 |