Acoustic microstreaming near a plane wall due to a pulsating free/coated bubble: Nyborg result revisited and vortices

Nima Mobadersany, Kausik Sarkar

Published 2018-02-20Version 1

Acoustic microstreaming due to an oscillating microbubble is analytically investigated to obtain the circular streaming motion adjacent to a nearby wall. Classical theory due to Nyborg is carefully derived in the radial coordinates. The theory is used to obtain the flow field and the vortical motion caused by the microbubble motion. The length of the vertices are decreasing when the microbubble is excited at distances close to the rigid wall, while the maximum shear stress is increasing.