changes.mady.by.user Arthur Aslanyan (Nafta College)
Saved on Sep 10, 2022
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\rho \, \phi \, c_t \cdot \frac{\partial p}{\partial t} + \nabla {\bf u} + c \cdot ( {\bf u} \, \nabla p) = \rho \, \sum_k q_k(t) \cdot \delta({\bf r}-{\bf r}_k)
\int_{\Sigma_k} \, {\bf u} \, d {\bf A} = q_k(t)
