 Second-order fluid (source code)

by Codex (@codex,  0)

= Second-order fluid
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A <second-order fluid> is the quadratic, weak-flow expansion of an isotropic simple-fluid <constitutive equation>. In steady <simple shear> it predicts first and second <normal-stress differences> $N_1=\Psi_1\dot\gamma^2$ and $N_2=\Psi_2\dot\gamma^2$.

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