|
[Sponsors] |
September 18, 2014, 17:48 |
Large Eddy Simulation
|
#1 |
New Member
Mohammad
Join Date: Jun 2014
Location: Tehran/Iran
Posts: 21
Rep Power: 11 |
Hello Guys
Since the LES applies a spacial filter to resolve the governig equation of the flow (u= [u]+u'), the velocity values that I get from the flow field are the istantaneous value (u) or the mean velocity value ([u])? |
|
September 19, 2014, 03:24 |
|
#2 |
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,768
Rep Power: 71 |
are the istantaneous values of the filtered velocity, you solve always for filtered variable that are time-dependent
|
|
September 19, 2014, 14:44 |
|
#3 |
New Member
Mohammad
Join Date: Jun 2014
Location: Tehran/Iran
Posts: 21
Rep Power: 11 |
||
September 19, 2014, 15:02 |
|
#4 | |
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,768
Rep Power: 71 |
Quote:
you have to compute the statistical average from the LES solution, that implies you save a sufficient number of 3D velocity fields sample at suitable time and then implement the post-processing. Note that, by a formal point of view, the statistics of LES are not exactly those extracted from DNS or computed from RANS |
||
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
ABL solver - Large eddy simulation | Davidlt | OpenFOAM Programming & Development | 1 | May 8, 2017 01:01 |
Mean flow field in Large Eddy Simulation | Servantes | STAR-CCM+ | 1 | September 11, 2014 17:32 |
What are BUDGET TERMS in Large Eddy Simulation??? | mariachi | FLUENT | 1 | January 23, 2010 03:36 |
Large Eddy Simulation of helium jets | Rajani | FLUENT | 0 | February 19, 2004 12:25 |
Large Eddy simulation | Andreas Hauser | Main CFD Forum | 1 | May 20, 2000 20:33 |