Although ultrasound is widely used in biomedical imaging, acoustic manipulation of fluids and particles on the micro to nano scale is still at research level. Acoustic streaming represents one of the very few inertial phenomena that may play a significant role in microfluidic devices. The goal of this Master thesis is to analyze a phoenomenon called acoustic streaming, which is generated by a nonlinear acoustic field with a finite amplitude propagating in a viscid fluid. The acoustic field is radiated by an Interdigitated Transducer (IDT), which creates a Surface Acoustic Wave (SAW) propagating at the surface of a piezoelectric layer. In particular first it is presented a general overview of the phenomenon and its current applications.