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How to calculate the polynomial coefficients of any arbitrary polynomial to fit data

Posted August 1, 2016 at 08:06 by Tobi

Dear all,

if you are interested in the calculation of polynomial coefficients to fit some data, you can check the method of least squares on my homepage. Here I explained everything in detail and also gave an example how to build the matrix A and the solution vector b for the problem we are discussing there. The polynomial that I am using in the example is:

\ln(\mu) = A + B \ln(T) + C\ln(T)^2 + D \ln(T)^3

How to build the matrix A and the solution vector...
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divDevRhoReff and divDevReff

Posted July 15, 2015 at 15:24 by Tobi
Updated January 19, 2016 at 06:38 by Tobi

Hi all,

I removed that blog post because now everything is available here: http://holzmann-cfd.de/index.php/en/publications

There it is more clear and straight forward.

If you want to give me some reputation please use that thread for that:

http://www.cfd-online.com/Forums/ope...-openfoam.html
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All about the PIMPLE algorithm - Part II

Posted October 21, 2014 at 17:55 by Tobi
Updated January 18, 2018 at 03:18 by Tobi (Removed content, updated content on wiki and book)

The Pimple Algorithm (21.08.2017)

In this blog I showed (since 2014) a few things about the pimple algorithm and how things are working in OpenFOAM. However, based on the fact that the explanation of the algorithm is given in my book, I removed the content here. The old revised one is still available at the wiki page. Links can be found below.



Thanks
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All about the PIMPLE algorithm

Posted October 21, 2014 at 17:54 by Tobi
Updated August 21, 2017 at 17:47 by Tobi

The Pimple Algorithm (21.08.2017)

In this blog I showed (since 2014) a few things about the pimple algorithm and how things are working in OpenFOAM. However, based on the fact that the explanation of the algorithm is given in my book, I removed the content here. The old revised one is still available at the wiki page. Links can be found below.



Thanks
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Influence of mesh size, orientation and type on numerical schemes

Posted July 27, 2014 at 11:13 by Tobi
Updated July 28, 2014 at 04:46 by Tobi

Dear Community,

I am happy and glad to tell you that I finished to analyze all my cases in the investigation of the "Influence of mesh size, orientation and type on numerical schemes in a convective flow field".

Information

  • Investigate into numerical schemes to convective flow field
  • Influence of schemes on mesh size
  • Influence of schemes on mesh type (structured / unstructured)
  • Influence of schemes on mesh/flow orientation (45degree / 0 degree)
...
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