血流在粗度微通道中的离散阶段模型模拟了伪亲密的形成
Magdalena Kopernik1, Karina Dyrda, Przemysław Kurtyka2,3
1AGH University Science and Technology, Kraków, Poland.
Acta of bioengineering and biomechanics
|February 5, 2024
概括
离散相模型 (DPM) 有效模拟微通道中复杂表面的红细胞回填,识别伪亲密形成的条件.
科学领域:
- 生物医学工程 生物医学工程
- 计算流体动力学的流体动力学.
- 细胞力学 细胞力学
背景情况:
- 伪亲密的形成对于心血管设备的性能至关重要.
- 在复杂的表面上模拟红细胞 (RBC) 的行为是具有挑战性的.
- 了解微通道流动力学是防止不良细胞反应的关键.
研究的目的:
- 开发一个离散相模型 (DPM) 来模拟复杂表面的RBC回填.
- 预测导致伪亲密层形成的条件.
- 研究复杂地形的流动微通道中的RBC行为.
主要方法:
- 应用有限体积法 (FVM) 和离散粒子法 (DPM).
- 利用混合物和粗度模型来评估它们的影响.
- 具有和没有粗度边界条件的DPM比较.
- 在形态复杂的表面上模拟红细胞碰撞.
主要成果:
- 使用立方体的DPM提供了最准确的模拟结果.
- 在各种边界条件下分析了血液速度和剪切应力.
- 在流动过程中观察到红细胞度,速度和时间分布.
- 证明了复杂的微通道表面的RBC回填.
结论:
- 带有立方体的DPM是模拟RBC补充的最佳方式.
- 该模型成功地预测了RBC在复杂表面上的行为.
- 这种模拟有助于理解和防止伪亲密的形成.
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