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第 40 卷 第 3 期                                                                       Vol. 40, No. 3
             2021 年 5 月                          Journal of Applied Acoustics                      May, 2021

             ⋄ 研究报告 ⋄



                            单泡超声空化仿真模型的建立及其


                                            动力学过程模拟                        ∗





                                                    徐 珂 许 龙           †



                                                (中国计量大学理学院      杭州   310018)

                摘要：为了模拟单泡超声空化的动力学特性，建立了单泡超声空化的有限元仿真模型，基于流体动力学控制方
                程和流体体积分数模型，利用有限元分析软件模拟了超声驱动下水中单泡的空化动力学过程。结果表明：单泡
                随时间的演化规律是先缓慢膨胀到最大后迅速塌缩；泡内压强与气体密度变化与单泡体积变化成反比；在膨
                胀阶段，泡外压强与气体密度沿着泡的径向向外递减；在压缩阶段，泡外在声压垂直方向的压强与气体密度要
                大于声压激励方向的压强和气体密度。该文分析结果将为超声空化动力学过程模拟及研究提供参考。
                关键词：超声空化；单泡；有限元仿真
                中图法分类号: O368           文献标识码: A          文章编号: 1000-310X(2021)03-0343-07
                DOI: 10.11684/j.issn.1000-310X.2021.03.004


                Establishment of a single-bubble ultrasonic cavitation simulation model and

                                         simulation of its dynamic process



                                                    XU Ke    XU Long


                                  (College of Science ,China Jiliang University, Hangzhou 310018, China)
                 Abstract: In order to simulate the dynamic characteristics of single bubble ultrasonic cavitation, a simulation
                 model of single-bubble ultrasonic cavitation was established. Based on the fluid dynamics control equation and
                 volume of fluid model, the finite element analysis software was used to calculate the cavitation dynamic process
                 of a single-bubble in water driven by ultrasound. The results show that the evolution rule of a single-bubble
                 with time is that it expands slowly to the maximum and then collapses rapidly. The change of the pressure and
                 the gas density inside the bubble is inversely proportional to the change of the single bubble volume. In the
                 expansion phase, the external pressure and the gas density of the bubble decrease along the radial direction of
                 the bubble. In the compression phase, the pressure and gas density in the vertical direction of sound pressure
                 are greater than that in the direction of sound pressure excitation. The results in this paper will provide a
                 reference for simulation of the dynamic process of the ultrasonic cavitation.
                 Keywords: Ultrasonic cavitation; Single-bubble; Finite element simulation





             2020-08-04 收稿; 2020-10-23 定稿
             国家自然科学基金项目 (12074354，11574277), 浙江省自然科学基金项目 (LY16A040006)
             ∗
             作者简介: 徐珂 (1998– ), 女, 山东菏泽人, 硕士研究生, 研究方向: 超声空化。
             † 通信作者 E-mail: xulong@cjlu.edu.cn
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