Fig. 6.

Modelled boundary-driven streaming patterns: a from the Reynolds stress method (RSM); b from the limiting velocity method (LVM); and c the $y$-extent of the inner streaming vortex in devices with various $h$, where ${\mathit{\delta }}_v$ is the thickness of acoustic boundary layer and $S_{\text{in}}$ and $S_{\text{out}}$ represent the sizes of inner and outer streaming vortices, respectively