We are looking for an expression of [k (x)]/ka as a function of u* = [k(x)]/[kLev(x)]. The relationships A1 and A2 are written as:
[k(x)]/ka = Ca"1([kLev(x)]2/[kLev(x)])(1 - U*) (A4)
The final relationship:
must be the limits of the function 0£(u*) as u* ^ 0 and u* ^ 1, respectively:
We found for the first terms in powers of £ (for £ < 1) a£ = a0(1 + 0.078£2) and b£ = b0(1 + 0.044£2)
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