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首页> 外文期刊>Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems >Experimental investigation of non-stationary motion of single small spherical particles in an upward flow with different velocities
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Experimental investigation of non-stationary motion of single small spherical particles in an upward flow with different velocities

机译：单个小球形颗粒在不同速度向上流动中的非平稳运动的实验研究

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This experimental investigation focuses on carefully determining the drag coefficient of single spherical particles with considerable small diameters in non-stationary motion. A low-speed wind tunnel and a set of high-speed photography system are employed to confirm the displacement of each particle from its trajectory. Moreover, spherical particles of two different densities are used and the minimum diameter of these particles reaches 0.1 mm. Meanwhile, the Basset force generated from the relative acceleration in the gas-particle flow is calculated approximately. The experimental results show that the maximum proportion of Basset force does not exceed 2.2%. In addition, the relationship of C-D-Re for the experimental data is also determined. This research offers fundamental experimental results for industrial applications and also contributes to the research of non-stationary gas-particle flow. (C) 2014 Elsevier B.V. All rights reserved.
机译：该实验研究着重于仔细确定非平稳运动中具有相当小直径的单个球形颗粒的阻力系数。使用低速风洞和一组高速摄影系统来确定每个粒子从其轨迹上的位移。而且，使用两种不同密度的球形颗粒，并且这些颗粒的最小直径达到0.1mm。同时，近似地计算由气体颗粒流中的相对加速度产生的贝塞特力。实验结果表明，贝塞特力的最大比例不超过2.2％。此外，还确定了C-D-Re与实验数据的关系。该研究为工业应用提供了基本的实验结果，也为非平稳气体颗粒流的研究做出了贡献。 （C）2014 Elsevier B.V.保留所有权利。

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