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#1 |
Senior Member
Mahdi Hosseinali
Join Date: Apr 2009
Location: NB, Canada
Posts: 273
Rep Power: 18 ![]() |
has anyone calculated taylor microscale in openfoam?
Appreciate it if you share the code. |
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#2 |
Senior Member
Mahdi Hosseinali
Join Date: Apr 2009
Location: NB, Canada
Posts: 273
Rep Power: 18 ![]() |
any one has any Idea?
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#3 |
Senior Member
Daniel P. Combest
Join Date: Mar 2009
Location: St. Louis, USA
Posts: 621
Rep Power: 0 ![]() ![]() |
People might be more likely to help if you provide a little more information e.g. equations; sources; what you have tried already; what type of simulation your are performing. I'm interested in the topic if you can provide more details.
Last edited by chegdan; November 21, 2012 at 07:54. Reason: edit: this sounds better |
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#4 |
Senior Member
Mahdi Hosseinali
Join Date: Apr 2009
Location: NB, Canada
Posts: 273
Rep Power: 18 ![]() |
thanks for the interest chegdan,
Taylor microscale is the main length scale measured in turbulent homogeneous box to determine Reynolds number since there is no physical length scale. here is a more descriptive of what it naturally is: http://en.wikipedia.org/wiki/Taylor_microscale but a formula to calculate it is presented in "turbulent flow" by Pope in page 199. Can you tell me how to put that formula in Opefoam? |
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#5 |
Senior Member
Daniel P. Combest
Join Date: Mar 2009
Location: St. Louis, USA
Posts: 621
Rep Power: 0 ![]() ![]() |
Looking at Pope, around the page that you suggested, I find that the longitudinal Taylor microscale
![]() ![]() where However, this formulation seems simplistic compared to the definition by pope using the longitudinal ( ![]() ![]() If you are satisfied with the second equation formulation, then I would suggest you look into the post-processing utilities as to how variables are read in at each time and used to calculate what you want e.g. Co utility. Give it a try and post back if you run into problems. |
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