泡泡和混合振动和非振动的气体流化活性颗粒物
Oscar J Punch1, Michael W Jordan1,2, Angelina S Moncrieffe1
1Department of Chemical Engineering, Columbia University, New York 10027, USA. ojp2117@columbia.edu.
Soft matter
|April 23, 2025
概括
活性物质力影响流化颗粒物质的混合. 低强度通过泡增强混合,而高强度可以抑制泡,但仍然通过扩散改善混合.
科学领域:
- 物理 物理学 物理
- 颗粒物质科学 颗粒物质科学
背景情况:
- 颗粒状材料在自然界和工业中无处不在.
- 了解它们的流量和混合特性对于各种应用至关重要.
- 活性物质引入了自我推进,改变了材料的行为.
研究的目的:
- 为了研究活性物质力对气流化颗粒物质的影响.
- 分析垂直振动对活性颗粒系统的影响.
- 为了绘制流体化活性颗粒材料的运输模式.
主要方法:
- 使用数值模拟来建模颗粒物质的行为.
- 活性物质力大小系统地变化.
- 在颗粒床上施加垂直振动.
主要成果:
- 低于1的活性物质力比 (活性力/重力) 通常会增加泡大小并促进混合.
- 超过1的比率抑制泡,导致混合较差,除非扩散增强它.
- 由于结构化的泡,垂直振动在更高的活性力下维持泡.
结论:
- 活性物质力,阻力和重力之间的平衡决定了传输模式 (亚扩散性,扩散性,增强性).
- 活性物质可以显著改变流化颗粒系统中的混合动力.
- 为预测运输行为,呈现了一个非维的政权地图.
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