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首页> 外文期刊>JSME International Journal. Series B, Fluids and Thermal Engineering >Bubble Behavior in Magnetic Fluid under a Nonuniform Magnetic Field
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Bubble Behavior in Magnetic Fluid under a Nonuniform Magnetic Field

机译：非均匀磁场下磁性流体中的气泡行为

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摘要

Experimental study is made to clarify the effects of nonuniform magnetic field on bubble behavior in a magnetic fluid. The behavior of vapor bubbles is visualized with ultrasonic wave echo under the nonuniform magnetic field. It is found that the void fraction in two-phase flow decreases with increase in the magnetic field due to the effect of magnetic body force. Furthermore, the effects of nonuniform magnetic field on translational motion and deformation of a single gas bubble in a magnetic fluid are experimentally examined using a transparent thin duct, called a Hele-Shaw cell. The experimental results indicate that a single bubble is decelerated in the region of positive magnetic field gradient and accelerated in the region of negative magnetic field gradient, and that it is elongated in the direction of the magnetic field.
机译：进行实验研究以阐明不均匀磁场对磁性流体中气泡行为的影响。在不均匀磁场下，超声波回波可以观察到汽泡的行为。可以发现，由于磁力的作用，两相流中的空隙率随着磁场的增加而减小。此外，使用称为Hele-Shaw电池的透明细导管，通过实验检查了非均匀磁场对磁性流体中单个气泡的平移运动和变形的影响。实验结果表明，单个气泡在正磁场梯度区域内减速，并在负磁场梯度区域内加速，并且在磁场方向上拉长。

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