Figure 5
From: Homogeneous material based acoustic concentrators and rotators with linear coordinate transformation
(a) The layered structure schematic of acoustic rotator; (b) horizontal acoustic pressure field distribution at 60 layers; (c) vertical acoustic pressure field distribution at 120 layers; (d) acoustic pressure field distribution at the internal line source. The emission direction of the source is horizontal while the antenna is vertical, but the external waves rotate 72 degrees counterclockwise; (e) acoustic pressure field distribution at the internal line source without transformation. The source rotates anticlockwise at an angle \(\upalpha = 72^\circ { }\) relative to the angle of (d). The emission direction is 72 degrees while the antenna is perpendicular to it; (f) total acoustic pressure field at a distance of 0.6 m from the center. Numerical detections collect (d, e) and the case whose antenna is vertical without coordinate transformation.
