发生时有多孔板块
Chandan Bose1,2, Callum Bruce1, Ignazio Maria Viola1
1School of Engineering, Institute for Energy Systems, University of Edinburgh, Edinburgh, EH9 3FB UK.
Theoretical and computational fluid dynamics
|February 17, 2025
概括
透性显著改变了矩形板周围的流体流动. 提高透率 (达西数) 通常会降低力,但可以在特定范围内增加板式力,影响剪切层.
科学领域:
- 流体动力学 流体动力学
- 计算流体动力学的流体动力学.
- 水力动力学是指水力动力学.
背景情况:
- 了解物体周围的流体流动力学在各种工程应用中至关重要.
- 对象透度对流动拓和力的影响不太清楚,特别是对于二维矩形板.
研究的目的:
- 为了研究通过达西数 (Da) 量化的透度对流动拓和作用于二维矩形板上的力的影响.
- 分析雷诺兹数 (Re) 和流量发生率的范围内的唤醒行为,动力学和力系数 (升力,阻力,扭矩).
主要方法:
- 对30到90之间的雷诺兹数 (Re) 进行了数值模拟.
- 这项研究系统地改变了达西数 (Da) 和流量发生角度 ().
主要成果:
- 对于所有达西数和流量事件来说,尾声保持稳定.
- 达西数 (Da) 的增加会改变旋双极结构,缩短并最终在关键的Da时消灭它.
- 提升力,阻力和扭矩通常随着Da的增加而减少,尽管板式力可以在特定的Da和发生范围增加.
结论:
- 透性在决定透板上的流量分离,动力学和力产生方面发挥着至关重要的作用.
- 这些发现提供了关于阻力和起重减小机制的见解,这些机制与切削层随着透率的增加而减弱有关.
- 这项研究对于设计和分析流体流中的小型透体具有价值.
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