Governing equations on differential form: Difference between revisions
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==== The Substantial Derivative ==== | ==== The Substantial Derivative ==== | ||
The substantial derivative operator is defined as | |||
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\frac{D}{Dt}=\frac{\partial}{\partial t}+\mathbf{v}\cdot\nabla | \frac{D}{Dt}=\frac{\partial}{\partial t}+\mathbf{v}\cdot\nabla | ||
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where the first term of the right hand side is the local derivative and the second term is the convective derivative. | |||
==== Conservation of Mass ==== | ==== Conservation of Mass ==== | ||
