Based on Renormalization Group Theory. Here . The function is defined as:
x is given by
Where and is given by:
Where is given by
![\mu _{eff} = \mu \left[ {1 + H\left( x \right)} \right]^{1/3}](/W/images/math/5/c/2/5c2e8d855c7b2663664adb30667d8412.png)
. 
is defined as: 
and 
is given by: ![\mu _s = \rho \left[ {C_{rng}} Vol^{1/3} \right]^{2} \begin{vmatrix} S \end{vmatrix}](/W/images/math/4/6/b/46bda061e4531f84ee23807a69bf12d4.png)
is given by 