title: Investigation of acoustic streaming patterns around oscillating sharp edges.
abstract: Oscillating sharp edges have been employed to achieve rapid and homogeneous mixing in microchannels using acoustic streaming. Here, we used a perturbation approach to study the flow around oscillating sharp edges in a microchannel. This work extends prior experimental studies to numerically characterize the effect of various parameters on the acoustically induced flow. Our numerical results match well with the experimental results. We investigated multiple device parameters such as the tip angle, oscillation amplitude, and channel dimensions. Our results indicate that, due to the inherent nonlinearity of acoustic streaming, the channel dimensions could significantly impact the flow patterns and device performance.
authors.affiliation: Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA. junhuang@psu.edu.
authors.forename: Nitesh
authors.initials: N
authors.lastname: Nama
authors.forename: Po-Hsun
authors.initials: PH
authors.lastname: Huang
authors.forename: Tony Jun
authors.initials: TJ
authors.lastname: Huang
authors.forename: Francesco
authors.initials: F
authors.lastname: Costanzo
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D000465:Algorithms; D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D055664:Electrochemical Techniques / Q000295:instrumentation*; D004867:Equipment Design; D005456:Fluorescent Dyes / Q000737:chemistry; D008422:Materials Testing; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation*; D008863:Microspheres; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D010316:Particle Size; D018583:Pliability; D011137:Polystyrenes / Q000737:chemistry; D066330:Printing, Three-Dimensional; D033081:Shear Strength; D014783:Viscosity; D014867:Water / Q000737:chemistry*
chemical_list: D004129:Dimethylpolysiloxanes; D005456:Fluorescent Dyes; D011137:Polystyrenes; D014867:Water; C013830:baysilon