Acoustic streaming in a vibrating air-filled cylindrical cavity is numerically investigated. Adiabatic and isothermal boundary conditions are considered, as well as the case in which adiabatic and isothermal boundary conditions are set respectively at the ends of the cavity and on its lateral surface. The value of the cavity radius at which the axial component of acoustic streaming velocity attains its maximum is found. The influence of the radius of the cavity and boundary conditions at its ends on the free oscillations, at the initial stage of the process, on the period average temperature, and on the acoustic streaming pattern is described.

中文翻译：

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圆柱腔中半径和边界条件变化时的声流

对振动的充气圆柱腔中的声流进行了数值研究。考虑了绝热和等温边界条件，以及分别在腔的端部和侧面设置绝热和等温边界条件的情况。找到空腔的半径值，在该半径处，声流速度的轴向分量达到最大值。描述了腔体的半径和腔体两端的边界条件对自由振动，过程初始阶段，周期平均温度以及声流模式的影响。