Fig. 6

Sensitivity of the viscosity. The component of \(\bar {\boldsymbol {N}}\), \(\bar {\mathbb {N}}\) and \(\bar {\mathbb {V}}^{*}\) in dependence of the parameter λ. In the case of λ=0 the fiber orientation distribution is isotropic, and by λ=2/3 it is unidirectional. Subfigure (d) show the direction dependent shear viscosity in the x-y plane, for the isotropic, and the unidirectional case (a) Components of \(\bar {\boldsymbol {N}}(\lambda)\) (b) Components of \(\bar {\mathbb {N}}(\lambda)\) (c) Components of \(\bar {\mathbb {V}}^{*}(\lambda)\) (d) \(\bar {\eta }_{\mathrm {s}}^{*}(\boldsymbol {p},\boldsymbol {d})\) for iso. and ud. case