[NablaDyn]

Hello everybody,

studying the SSG Reynolds-stress model on openfoam.com (http://www.openfoam.com/documentatio...8C_source.html) I came across something that confused me. First, the related documentation (http://www.openfoam.com/documentatio...e-ras-ssg.html) is very sparse and maybe also erroneous as it seems to be under construction.

The model equations in the documentation seem to contain a redundant in the second right hand side term (i.e. the first term of the pressure-strain correlation). Also, the documentation, as well as the source code show a sum within the same expression as above

fvm::Sp(((C1_/2)*epsilon_ + (C1s_/2)*G)*alpha*rho/k_, R)

. To my knowlegde

G

is the newtonian gravitational constant with units , whereas

epsilon_

has dimensions . This looks inconsistent to me. Dimensional analysis of the mentioned expression shows G differs from epsilon_ by the units which implies that there is a dynamic-viscosity-like cofactor missing in the G term, since:

I'm new to the OpenFOAM source code, so please take it easy on me ...

... but is it possible that there's an error in the implementation of the SSG model?

Thanks in advance for any help or comments