Lecture 10 : Classical Idealisation of Turbulent Stresses
The Boussinesq or eddy viscosity model
(10.1)
The eddy viscosity is still unknown. The kinetic energy, is the topic of a subsequent chapter. The term ensures that the trace of the RHS is consistent with the LHS for incompressible flow, is Kronecker delta (a matrix that corresponds to 3 × 3 unit matrix).
is the topic of a subsequent chapter. The term 
ensures that the trace of the RHS is consistent with the LHS for incompressible flow, 
is Kronecker delta (a matrix that corresponds to 3 × 3 
