在层流中测试圆柱形孔口,孔口直径比为β = 0.5
Anna Golijanek-Jędrzejczyk1, Andrzej Mrowiec2
1Faculty of Electrical and Control Engineering, Gdańsk University of Technology, 80-233, Gdansk, Poland. anna.golijanek-jedrzejczyk@pg.edu.pl.
Scientific reports
|September 18, 2023
概括
这项研究确定了通过特定的圆柱孔 (β=0.5,L/d=1) 流动的液压油在层状流量状态 (Re=100-950) 中的平均排放系数. 结果为工程应用提供了关键的流量特征.
科学领域:
- 流体力学 流体力学 流体力学
- 实验工程实验工程实验工程
- 液压系统 水力系统
背景情况:
- 孔径流动特性对于流体动力学和液压系统设计至关重要.
- 了解特定几何形状的流动行为,如圆柱形孔,对于准确的计量和控制至关重要.
- 层状流程需要精确的表征,因为粘性效应主导惯性力.
研究的目的:
- 通过实验来确定一个圆柱形孔的放电系数 (C).
- 在层状条件下分析液压油的流量特性.
- 为了确定特定孔径几何形状 (β=0.5,L/d=1) 和流速的流量数据.
主要方法:
- 在DN50通道中测试液压油流量的实验测量.
- 层状系统中的流量表征,特别是从100到950的雷诺德数 (Re).
- 在不同的动力粘度值 (13.4-33.3 cSt) 和流速 (qv < 0.5 dm3/s) 中确定平均放电系数 (C).
主要成果:
- 为四个不同的动力粘度值建立了标准流量特性.
- 平均放电系数 (C) 确定了经过测试的层状流量条件范围.
- 实验数据为校准和验证这种孔口配置的流量模型提供了基础.
结论:
- 该研究成功地描述了液压油流通过一个圆柱形孔在层状模式.
- 确定的放电系数为涉及类似孔径几何形状和流量条件的应用提供了有价值的数据.
- 实验发现有助于更好地了解液压系统中的流量计精度.
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