________ u(x,y,z,t) = u(x,y,z) + u'(x,y,z,t) - u - a quantity: a function of x,y,z, and t
- u overbar - time-averaged u
- u' - fluctuating part of u
It is used to help deal with the Navier-Stokes Equations.
The fluctuating component has a non-linear component which is
called the mathematics,fluid dynamics,field) |