通过身体加速和一般化的沃默斯利溶液的联合作用,研究狭窄的动脉中的血液流动模式
Mahesh C Udupa1, Sunanda Saha2, Sekarapandian Natarajan3
1Department of Mathematics, School of Advanced Sciences, VIT, Vellore, 632014, India.
Scientific reports
|January 13, 2025
概括
这项研究在各种条件下从数值上分析了狭窄动脉 (狭窄动脉) 中的血流. 运动加剧了流量循环,休息和运动之间的过渡速度可能与狭窄症的进展相关.
科学领域:
- 生物医学工程 生物医学工程
- 流体动力学 流体动力学
- 心血管科学 心血管科学
背景情况:
- 由斑块积累引起的动脉狭窄,阻碍了血液流动并改变了血液动力学.
- 了解狭窄动脉的流动动力学对于诊断和管理心血管疾病至关重要.
研究的目的:
- 在休息,运动和外部加速条件下,在狭窄的动脉中对血液流动波动进行数值分析.
- 研究生理状态和过渡率对狭窄发展和流动模式的影响.
主要方法:
- 使用了一种经过修改的2D SIMPLE压力校正解决器,具有直角坐标转换.
- 血液风湿学模型使用了通用功率定律流体,在入口处使用了通用沃默斯利溶液.
- 模拟评估了几何和流量参数,分析了时间平均和阶段平均数据.
主要成果:
- 运动显著增加了狭窄的下游的流量循环.
- 休息和运动条件之间的过渡率与狭窄症的发展相关.
- 研究了与生理条件相关的超粘度效应.
结论:
- 生理条件,特别是运动和状态之间的过渡,对静脉狭窄的血液动力学产生了重大影响.
- 这些发现表明,与狭窄症进展中的生理状态变化速度相关的潜在并发症.
- 数字模拟为狭窄的动脉几何体内的复杂流动动力学提供了宝贵的见解.
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