|September 17, 2013, 07:41||
mut and alphat & compressible flow
Join Date: Sep 2012
Location: Iran - Tehran
Posts: 185Rep Power: 6
Hi foamers ,
I have a question about setting mut and alphat file in the 0 directory .
I checked rhopimpleFoam tutorial . In this case all values of mut and alphat on the walls are 0 .
type mutwallFunction; ------> for mut
value uniform 0;
type alphatwallFunction; ------> for alphat
value uniform 0;
Also I checked kEpsilon.C in this source code I found a formula for calculating mut and alphat .
mut_ = Cmu_*rho_*sqr(k_)/epsilon_;
alphat_ = mut_/Prt_;
I want to create a case by coldEngineFoam . So I should set mut and alphat file and I am confusing about setting these files.
Please anybody guide me. I should set uniform 0 for them or I should calculate them by using their formula . Why in the tutorial the values have set uniform 0 ??
I appreciate any help from you.
Thanks and best regards,
|September 17, 2013, 12:54||
Join Date: Sep 2009
Location: Tehran, Iran
Blog Entries: 1Rep Power: 17
as much as i know , when you are using wall function, the value is place holder! so that value is not important and the value of variable will be calculated based upon correlation
|Thread||Thread Starter||Forum||Replies||Last Post|
|Free jet simulation||msarkar||OpenFOAM Running, Solving & CFD||35||February 21, 2017 19:36|
|an odd(at least for me!) reconstructPar error on a field||immortality||OpenFOAM Running, Solving & CFD||3||June 3, 2013 22:36|
|XiFoam floating point error..mut error?||achinta||OpenFOAM||8||July 31, 2012 04:48|
|laminar pipe flow with buoyantSimpleRadiationFoam and janafThermo crashes||Fabian||OpenFOAM||1||September 29, 2010 11:38|
|pipe flow with heat transfer||Fabian||OpenFOAM||2||December 12, 2009 05:53|