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## A generalized thermal/dynamic wall function: Part 3

Posted October 17, 2016 at 11:25 by sbaffini (NuTBox)
Updated October 18, 2016 at 07:30 by sbaffini (Added missing Pr/Prt term to k)

In this post i summarize the initial problem and the procedure to determine the wall function value (i.e., the solution) for given ,, and .

We looked for a solution to the problem:

with:

...
Attached Files
 wallfn.txt (2.2 KB, 12 views)
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## A generalized thermal/dynamic wall function: Part 2

Posted October 17, 2016 at 08:24 by sbaffini (NuTBox)
Updated October 17, 2016 at 10:52 by sbaffini

In the first part of this post we left with the problem of computing the following integral:

with:

I added all the explicit functional dependencies here because we know ...
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## A generalized thermal/dynamic wall function: Part 1

Posted October 14, 2016 at 12:27 by sbaffini (NuTBox)
Updated October 17, 2016 at 13:50 by sbaffini (Corrected an error in the definition of FT+ and put the equations in the velocity form)

In a previous post i wrote about an extension of the Reichardt law of the wall to pressure gradient effects. That was derived by assuming the Reichardt profile as a solution for the case without pressure gradient and using integration by parts. In particular, given the the Reichardt function ( is the Von Karman constant):

with:
...
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## A semi-analytical extension of the Reichardt wall law to pressure gradient effects

Posted April 17, 2015 at 07:40 by sbaffini (NuTBox)

I recently worked on wall functions, especially those based on simplified 1D numerical integration (e.g., http://link.springer.com/chapter/10....-642-14243-7_7) and i found a relatively simple, analytical, formulation that takes into account pressure gradient effects.

In practice, this is an extension of the Reichardt wall law to pressure gradient effects.

It is semi-analytical because it takes as assumption that the base Reichardt law is an exact solution of the...
Attached Files
 wallf.pdf (36.5 KB, 224 views) wallfn.txt (1.2 KB, 114 views)
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## Ph.D. Thesis on LES

Posted May 1, 2014 at 12:24 by sbaffini (NuTBox)

I recently defended my thesis on Large Eddy Simulation, which is now available at:

http://hdl.handle.net/10589/89603

I won't spend too much words on promoting it, you can read the abstract for this. I just want to say it possibly provides a fresh view on the matter of implicit/explicit filtering, commutation errors and other evergreen topics in LES. As i put a specific effort on this, i also hope that it might work as a not too heavy introduction on LES in general. Finally,...
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