Calculation and analysis on acoustic radiation force by a fixed spheroid
WANG Mingsheng;OUYANG Jie;LIU Hao;CUI Zixian;Hangzhou Applied Acoustics Research Institute;Systems Engineering Research Institute;
Based on acoustic scattering theory, a computational model of acoustic radiation force on oblate and prolate spheroids is established in terms of partial wave series(PWS) method. Through the formula of acoustic radiation force, the axial acoustic radiation force of rigid and liquid spheroids illuminated by Bessel beams is calculated and analyzed. Numerical simulations showing, for rigid spheroids, negative acoustic radiation force could be benefited by oblate spheroids more easily compared with prolate spheroids. However, liquid prolate spheroids could stimulate the emergency of negative acoustic radiation more easily than liquid oblate spheroids.Besides, the negative acoustic radiation force is also influenced by the zeroth and first Bessel beams obviously.These results could illustrate that the application of acoustic tweezers for rigid and liquid spheroid particles is feasible theoretically.