Acoustic monopole
= Acoustic monopole
An acoustic monopole represents unsteady mass or volume injection. A moving-interface mass-flux defect contributes $\partial_t(Q\delta_s)$ to the density <wave equation>.
= Acoustic monopole
An acoustic monopole represents unsteady mass or volume injection. A moving-interface mass-flux defect contributes $\partial_t(Q\delta_s)$ to the density <wave equation>.