Bubbling behavior of a fluidized bed of fine particles caused by vibration-induced air inflow

Shuji Matsusaka; Murino Kobayakawa; Megumi Mizutani; Mohd Imran; Masatoshi Yasuda

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Bubbling behavior of a fluidized bed of fine particles caused by vibration-induced air inflow

机译：振动引起的空气流入导致细颗粒流化床的鼓泡行为

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We demonstrate that a vibration-induced air inflow can cause vigorous bubbling in a bed of fine particles and report the mechanism by which this phenomenon occurs. When convective flow occurs in a powder bed as a result of vibrations, the upper powder layer with a high void ratio moves downward and is compressed. This process forces the air in the powder layer out, which leads to the formation of bubbles that rise and eventually burst at the top surface of the powder bed. A negative pressure is created below the rising bubbles. A narrow opening at the bottom allows the outside air to flow into the powder bed, which produces a vigorously bubbling fluidized bed that does not require the use of an external air supply system.

机译：我们证明了振动引起的空气流入会导致细颗粒床中的剧烈鼓泡，并报告了这种现象发生的机理。当由于振动而在粉末床中发生对流时，空隙率高的上部粉末层向下移动并被压缩。该过程迫使粉末层中的空气排出，从而导致气泡的形成，该气泡上升并最终在粉末床的顶部表面破裂。在上升的气泡下方会产生负压。底部的狭窄开口允许外部空气流入粉末床，从而产生了剧烈鼓泡的流化床，而无需使用外部空气供应系统。

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《Scientific reports.》 |2013年第1期|共页
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Shuji Matsusaka; Murino Kobayakawa; Megumi Mizutani; Mohd Imran; Masatoshi Yasuda;
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1. Behavior of Bubbles and Heat Transfer Characteristics in a Fine Particle Fluidized Bed Equipped with Immered Vertical Tube Bundles at Lower Gas Velocities [J] . Ryohei Yamazaki, Kei Nishibori, Kiyonobu Ogura, 化学工学論文集 . 2002,第3期

机译：在较低气体速度下装有沉管垂直管束的细颗粒流化床中的气泡行为和传热特性
2. Behavior of Bubbles and Heat Transfer Characteristics in a Fine Particle Fluidized Bed Equipped with Immered Vertical Tube Bundles at Lower Gas Velocities [J] . Ryohei Yamazaki, Kei Nishibori, Kiyonobu Ogura, 化学工学論文集 . 2002,第3期

机译：细颗粒流化床中的气泡和传热特性的行为，其配备较低气体速度下的浸入式垂直管束
3. Circulating particle flow and air bubble behavior at various superficial air velocities in two-dimensional gas-solid fluidized beds [J] . Bambang Trisakti, Jun Oshitani, Zennosuke Tanaka Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan . 2001,第4期

机译：二维气固流化床中不同表观风速下的循环粒子流和气泡行为
4. Effect of addition of sub-micron fines on the behavior of bed particles in a powder-particle fluidized bed [C] . WEN Su-ying Asian Particle Technology Symposium . 2007

机译：添加亚微米细粉对粉末颗粒流化床中床颗粒行为的影响
5. Analysis and scaling of a two-stage fluidized bed for drying of fine coal particles using Shannon entropy, thermodynamic exergy and statistical methods. [D] . Rowan, Steven Lee. 2010

机译：使用香农熵，热力学能值和统计方法对用于干燥煤细粉的两级流化床进行分析和定标。
6. Bubbling behavior of a fluidized bed of fine particles caused by vibration-induced air inflow [O] . Shuji Matsusaka, Murino Kobayakawa, Megumi Mizutani, -1

机译：振动引起的空气流入导致细颗粒流化床的鼓泡行为
7. Bubbling behavior of a fluidized bed of fine particles caused by vibration-induced air inflow. [O] . Matsusaka Shuji, Kobayakawa Murino, Mizutani Megumi, 2013

机译：由振动引起的空气流入引起的细颗粒流化床的鼓泡行为。
8. Fundamental study on transient bubble (slug) behavior by characterizing transient forces of solid particles in fluidized beds. Topical report, January 1991--June 1992 [R] . Kono, H 1992

机译：通过表征流化床中固体颗粒瞬态力的瞬态气泡（段塞）行为的基础研究。专题报告，1991年1月至1992年6月

Bubbling behavior of a fluidized bed of fine particles caused by vibration-induced air inflow

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