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Material derivative

{title2=$D\mathbf u/Dt$}

The material acceleration is the rate of change of velocity following a continuum parcel:
$$
\frac{D\mathbf u}{Dt}
=\frac{\partial\mathbf u}{\partial t}
+(\mathbf u\mathbin\cdot\nabla)\mathbf u.
$$


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Material acceleration ( $D u / D t$ )

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Material acceleration (Du/Dt)

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Material acceleration ( $D u / D t$ )

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