Numerical Absorbing Boundary Conditions Based on a Damped Wave Equation for Pseudospectral Time-Domain Acoustic Simulations

Figure 5

BW₂₀ as a function of the angle and the frequency obtained with the numerical PSTD scheme, (7). (a) For 𝑚=3 and (b) for 𝑚=4.

(a)

(b)