Study Of Acoustic Streaming In Blood

Acoustic streaming in blood is studied in this paper. Acoustic wave propagating in media has its linear momentum, which is equal to the acoustic power divided by the speed of sound. Acoustic streaming is a steady current flow in a fluid caused by the momentum transfer associated with the absorption of acoustic waves by the media. Acoustic streaming takes place in a viscous medium at the vicinity of a boundary such as planes, cylinders, or spheres. In case of that,bubbles play an important role. It is more effective as a sound current source than the hard object under the same conditions because of the compressibility of the bubbles. Interaction between bubble and the boundary has important effect in various fields so the study about this acoustic streaming is necessary for better research.Making use of the Doinikov and Bouakaz’s model, the aim of this study is to investigate acoustics streaming and its induced shear stress of a bubble near two rigid planes. Acoustics streaming conducted by micro-bubble near rigid plane is analyzed by expanding one-plane model to two-plane model. A numerical calculation of shear stress in the case of two-plane has been conducted which considers the effect of parameters like bubbles’positions, viscous coefficient of blood and the radius of bubble.The model built in this paper could be expanded to the micro-bubble in the case of soft boundary or elastic boundary.