Motion of Gas Bubbles and Rigid Particles in Vibrating Fluid-Filled Volumes
Motion of Gas Bubbles and Rigid Particles in Vibrating Fluid-Filled Volumes
复制标题
DOI：
10.1016/j.piutam.2013.04.007
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
I. Blekhman;L. I. Blekhman;V. Sorokin;L. Vaisberg;V. B. Vasilkov;K. Yakimova
中科院分区：
文献类型：
--
作者：
I. Blekhman;L. I. Blekhman;V. Sorokin;L. Vaisberg;V. B. Vasilkov;K. Yakimova
振荡流体中气泡和刚性颗粒的运动对于各种广泛使用的技术过程（特别是浮选过程）的理论具有根本意义。因此，许多研究都关注这个问题，其中一些是由著名科学家进行的。主要的显着效应是振动流体体积中的重颗粒上升和轻颗粒（气泡）下沉，以及新兴气垫的异步自激振动。在作者最近的论文中，利用振动力学的概念和运动直接分离的方法解决了这个问题；还进行了实验研究。本文对这些研究进行了概括和补充。特别关注气泡和轻质刚性颗粒运动的分析，这些颗粒的尺寸与外部激励的幅度相比较小；本文还考虑了较大（可压缩）气泡的运动。结果表明，在一定的外部激励参数下，这些颗粒和气泡将沉入流体中，并制定了相应的条件。
Motion of gas bubbles and rigid particles in an oscillating fluid is of fundamental interest for the theory of various widely used technological processes, in particular, for the flotation process. Therefore, many studies have been concerned with this problem, some of those being undertaken by eminent scientists. The main remarkable effects are heavy particles rising and light particles (gas bubbles) sinking in vibrating fluid's volume, and asynchronous self-induced vibration of emerging air cushion.In the authors’ recent papers, the problem has been solved by means of the concept of vibrational mechanics and the method of direct separation of motions; experimental studies have been also conducted. The present paper generalizes and supplements these studies. A special attention is given to the analysis of motion of bubbles and light rigid particles, whose sizes are small in comparison with the amplitude of external excitation; motion of larger (compressible) bubbles is also considered in the paper. It is shown that at certain parameters of external excitation such particles and bubbles will sink in the fluid, corresponding conditions are formulated.