The equations of the boundary layer are integrated by an expression of the form f(x)=∫0 xe-F(x)φ (x) dx, where F(x) is a positive function with x=0 as the stationary point; φ (x) is slowly varying; ...

The control of small structures and fast modes needs not only more accurate values in the commonly used dimensions (, u, T, P), but also, in fact more essentially, the controls from more dimensions.