کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8256892 | 1534268 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Primary Bjerknes force in a three-dimensional nonlinear resonator: Numerical simulations
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Primary Bjerknes force in a three-dimensional nonlinear resonator: Numerical simulations Primary Bjerknes force in a three-dimensional nonlinear resonator: Numerical simulations](/preview/png/8256892.png)
چکیده انگلیسی
The effect of the primary Bjerknes force caused by a three-dimensional nonlinear standing ultrasonic wave on a population of nonlinear oscillating bubbles is studied in this paper by analyzing the results obtained from simulations performed with a numerical model at low and moderate pressure amplitudes. Small air bubbles are evenly distributed in a water filled cavity excited at resonance for which axial symmetry is assumed. Both the bubble oscillation variable and the pressure variable are unknown in the nonlinear set of coupled differential equations that describes the interaction of ultrasound and bubbles. Simulation results show that the three-dimensional primary Bjerknes force field is strongly amplitude dependent. We also analyze whether taking the term in the differential system that defines the nonlinear behavior of the pressure field into account is determinant or not on the computation of the force field. The corresponding results corroborate the one-dimensional conclusions on the fundamental importance of considering this nonlinear acoustic term to obtain an accurate approximation of the force in a cavity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wave Motion - Volume 63, June 2016, Pages 23-31
Journal: Wave Motion - Volume 63, June 2016, Pages 23-31
نویسندگان
Christian Vanhille,