 |
 |
 |
|
|
|
[Sponsors] | ||||
March 9, 2015, 06:00
|
Convergence
|
#1 |
|
Member
Nurzhan
Join Date: Jan 2014
Posts: 56
Rep Power: 12  |
Dear Experts,
I need your help. My target I could not get my result converged with the single precision (maximum 10^-5). However, the solution converged at each time-step, using the double-precision. Could anyone please explain a reason to use the double-precision? Can you please refer any material about the single and double-precision so I can study it myself. Regards, Nurzhan |
|
|
|
|
|
March 9, 2015, 06:07
|
|
#2 |
|
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,872
Rep Power: 144 |
Numerical round-off. The double precision numeric resolves the small differences between numbers more accurately so the single precision simulation gets lost in noise generated by numerical round-off, but the double precision simulation has sufficient precision in the numbers to have the numerical noise at a low enough level that convergence is still possible.
|
|
|
|
|
|
|
March 9, 2015, 20:25
|
|
#3 |
|
Member
Nurzhan
Join Date: Jan 2014
Posts: 56
Rep Power: 12 |
Thank you, Glenn!
|
|
|
|
|
|
 |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Convergence | Centurion2011 | FLUENT | 48 | June 15, 2022 00:29 |
| Force can not converge | colopolo | CFX | 13 | October 4, 2011 23:03 |
| Convergence of CFX field in FSI analysis | nasdak | CFX | 2 | June 29, 2009 02:17 |
| Defect correction and convergence | ganesh | Main CFD Forum | 4 | June 30, 2006 15:20 |
| Convergence problems | Chetan | FLUENT | 3 | April 15, 2004 20:13 |
Linear Mode
