Supplement Number 1

The variation of the non-dimensional Reynolds stress anisotropy tensor (bij), anisotropic Invariant Map (AIM), eigenvalues (λ_1,λ_2 and λ_3) and anisotropic invariant function (F) are plotted in Figs. (S1, S2, S3 and S4) for locations 2 and 4, respectively. Here, location 2 and 4 are the cross sections at bend upstream and downstream, respectively.