Comparison of amplitudes (row 1) and slowly varying phases (row 2) along the point reception axis (at z = d) under no-flow, uniform and laminar flow conditions (Eqs. (8) and (4)) for a frequency of 500 kHz (ka = 78.5). Flow velocities of v _avg = 8 m/s, 24 m/s and 40 m/s (column 3) when d = 0.5 (column 1) and 1 m (column 2) are applied. The red vertical dashed line (x = 0) marks the point-receiver position.