一个低成本的,开源的圆柱形Couette风力计
Makita Erni1, A John Hart2, David Trumper2
1Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA. merni@alum.mit.edu.
Scientific reports
|December 5, 2024
概括
研究人员开发了一种低成本的开源风力计 (OSR),使用3D打印进行可访问的流体流量分析. 该设备准确地测量粘度和复杂的流体行为,为教育和研究民主化了类风学测试.
科学领域:
- 材料科学与工程 材料科学与工程
- 流体动力学 流体动力学
- 仪器化 仪器化 仪器化
背景情况:
- 风病学,研究流体流动,对于各种应用至关重要,但往往需要昂贵,复杂的设备.
- 由于成本,尺寸和基础设施需求,许多人无法获得传统的风湿计.
- 简单的粘度测量无法捕捉到许多现实世界流体的复杂行为.
研究的目的:
- 引入一个低成本的,开源的风湿计 (OSR) 可访问的风湿测量.
- 为了证明OSR在测量牛顿和复杂流体属性的能力.
- 为了提供一个平台,以进一步创新在负担得起的类风湿学.
主要方法:
- 使用3D打印部件和现成组件构建了一个开源风湿计 (OSR),材料成本低于200美元.
- 采用了应变控制的剪流方法,其中微型步进电机在液体样本中旋转一个工具.
- 使用负载电池测量反应扭矩,以计算粘度和其他神经学参数.
主要成果:
- 在测量牛顿流体 (0.1-10 Pa.s) 与基准值相比时,OSR的误差低于23%.
- 复杂液体 (微凝,泡,生物聚合物溶液) 的流量曲线在类似的误差范围内成功测量.
- 证明过渡性测量,包括对生物聚合物溶液的应力放松,提取非线性缓冲函数.
结论:
- OSR提供了一种具有成本效益的替代方案 (商业设备价格的1/25).
- 该开源平台可用于教育和研究目的的广泛采用和定制.
- OSR成功地弥合了先进流体表征的可访问性差距.
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