实验观测和压力下降建模在水平毫流体液压输送中的插头形成
Marc Fischer1, Etienne Gagnepain1, Guillaume Dumazer1
1LGF, UMR No. 5307, Centre SPIN, Mines Saint-Etienne, Université Lyon, 42023 Saint-Etienne, France.
Physical review. E
|May 17, 2024
概括
本研究研究了玻璃珠的液压输送,观察了不同的插头和伪插头流量模式. 确定了速度分布和日志正常长度分布的过渡,提供了预测压力下降的洞察力.
科学领域:
- 流体力学 流体力学 流体力学
- 颗粒的流动动力学 颗粒的流动动力学
- 多相流量系统多相流量系统
背景情况:
- 了解颗粒物质运输对于工业过程至关重要.
- 由于粒子-流体相互作用,液压输送带来了独特的挑战.
- 描述流动模式是优化运输效率和防止堵塞的关键.
研究的目的:
- 分析玻璃珠在水平管中的液压输送.
- 为了研究插头和伪插头流量模式之间的过渡.
- 开发一个预测模型,用于压力下降的伪插头流.
主要方法:
- 实验设置涉及玻璃珠运输的水平管.
- 对插头和伪插头的速度和长度的观察和统计分析.
- 使用有效粘度模型解释压力下降.
主要成果:
- 识别了低速率的插头流量和高速率的伪插头流量.
- 观察到传播速度分布从峰值到均的转变.
- 发现的插头长度遵循日志常态分布.
- 由于颗粒稀释,表现出明显的剪切稀释效应.
结论:
- 该研究阐明了插头和伪插头流量模式的独特特征.
- 在量化描述流动行为的过渡.
- 这些发现为伪插头流量压力下降计算提供了预测工具,这对于工业应用至关重要.
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