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Simulated transient pressure field in the x=0 plane for an equilateral triangular source with sides equal to 4 wavelengths. For this calculation, the excitation is the Hanning-weighted pulse in Eq. (16), and the transient pressure is evaluated at 85 time points in an 81×101-point grid. The result is plotted at 1.8125 μs after the initiation of the input pulse.
