2. (14 pt) Starting from the general constitutive equation derived in class: $\overline{\sigma} = \lambda(\nabla \cdot \vec{u})\overline{I} + 2\mu\overline{D}$, find an expression for $\nabla \cdot \vec{u}$ for an incompressible flow with constant viscosity.
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Step 1: Start with the general constitutive equation =XV+2D. Show more…
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