Heuristic solution for the acoustic radiation of a moving monopole in an inhomogeneous and moving atmosphere. Application to aircraft noise

Topical Issue - Numerical, computational and theoretical acoustics

Open Access

Figure 9

Snapshots of the instantaneous sound pressure levels in the planes y = 0 and z = 2 m obtained from the FDTD solution at time (a) t = 0.706 s and (b) t = 3.971 s. The monopole with a source frequency of f₀ = 500 Hz is moving at constant height z_s = 2 m and Mach number M_s = 0.1.

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