A Model for an Acoustically Driven Microbubble Inside a Rigid Tube

作者：Qamar Adnan^*; Samtaney Ravi

来源：Journal of Fluids Engineering-Transactions of the ASME, 2015, 137(2): 021301.

DOI：10.1115/1.4028337

A theoretical framework to model the dynamics of acoustically driven microbubble inside a rigid tube is presented. The proposed model is not a variant of the conventional Rayleigh-Plesset category of models. It is derived from the reduced Navier-Stokes equation and is coupled with the evolving flow field solution inside the tube by a similarity transformation approach. The results are computed, and compared with experiments available in literature, for the initial bubble radius of R-o = 1.5 mu m and 2 mu m for the tube diameter of D = 12 mu m and 200 mu m with the acoustic parameters as utilized in the experiments. Results compare quite well with the existing experimental data. When compared to our earlier basic model, better agreement on a larger tube diameter is obtained with the proposed coupled model. The model also predicts, accurately, bubble fragmentation in terms of acoustic and geometric parameters.

• 出版日期2015-2
• 单位KAUST