眼诱导微生物在宾汉塑料液体中的运输,在不对称的微通道中出现壁滑动
N Ibrahim1, Maryiam Javed2, N Imran3
11Department of Applied Mathematics & Statistics, Institute of Space Technology (IST), P.O. Box 2750, Islamabad, 44000, Pakistan.
Scientific reports
|December 5, 2025
概括
这项研究模拟了宾汉塑料液体与微生物在微通道中的环静电运输. 研究结果揭示了滑动,宾厄姆数和眼运动如何影响生物医学应用中的流量,热量和度.
科学领域:
- 流体动力学 流体动力学
- 生物医学工程 生物医学工程
- 数学建模的数学建模
背景情况:
- 宾汉塑料液体在生物和工业微流体运输 (例如粘液,皮质,血液) 中至关重要.
- 灵感来自生物毛的围静运动是微通道中流体运输的关键.
- 了解不同条件下的活性微生物的非牛顿流体行为对于微流体设备设计至关重要.
研究的目的:
- 开发一种新的数学模型,用于与活性微生物的宾汉塑料流体的环静电运动.
- 研究滑动边界条件和不对称微通道几何学对流体传输的影响.
- 分析毛诱导的运动,热传递和微生物动态的影响.
主要方法:
- 使用长波长和低雷诺兹数假设,控制部分微分方程 (动量,热量,度,微生物传输) 的非维化.
- 简化为一对非线性普通微分方程.
- 使用MATLAB中的bvp4c方法的数值解决方案,结合滑动效应和乳毛参数 (离心率,乳毛长度).
主要成果:
- 滑动增加了墙壁的速度,但减少了核心的速度;增加的宾汉姆数减少了流体的捕获.
- 较高的离心率通过最大限度地减少再循环的螺栓区域来提高送效率.
- 温度受到热量产生/朱尔加热 (增加) 和辐射/散热 (减少) 的影响;度随着施密特数和反应而降低;微生物密度随着热泳,生物对流和佩克莱特数而降低.
结论:
- 综合模型为复杂的微流体运输现象提供了新的见解.
- 结果与优化生理流量 (粘液清除,乳液运输) 和设计生物医学周围有关.
- 这项研究解决了文献上的差距,将宾汉的塑性风湿学与毛驱动的流动,滑动和微生物运输在不对称的微通道中结合起来.
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