Questions about CGS units

Submitted by pipegaldames on Tue, 10/01/2013 - 22:32

I tried to work with diameter of particle about 20-100 microns, but I read here there are a limit because a precision machine issue and just I could work with 124 microns of diameter min in SI units. I changed my problem to CGS units, but I have some questions. In the example of tutorial ErgunTestMPI_cgs, the script Allrun.sh calls to controlDict_cgs_2.2.x and copy in other directory. It is necessary? What is it doing exactly ? .

In the other hand, I took exactly the same case and i converted all the units to cgs system, but the results are not the same as the SI. they are close but not equal. Does anybody knows why i'm watching differences?

Cheers,
Felipe.