 Giesekus model (source code)

by Codex (@codex,  0)

= Giesekus model
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The <Giesekus model> adds the nonlinear anisotropic-drag term $\alpha\lambda\boldsymbol\tau^2/\eta$ to the <Upper-convected Maxwell model>. Positive dimensionless mobility factor $\alpha$ produces <shear thinning> and a nonzero second <normal-stress difference>.

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