有效的多忠实性流体结构相互作用建模用于可变形生物组织中的脉动性血流
Chang Min Lee1, Youngjae Choi1, Kiwon Lee2
1Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea.
Annals of biomedical engineering
|March 11, 2026
概括
这项研究引入了一种新的多忠实性流体结构相互作用 (FSI) 框架,用于模拟由于外部压缩引起的组织变形和血流变化. 高效模型准确地捕捉了这些效应,降低了压缩疗法等应用的计算成本.
科学领域:
- 生物医学工程 生物医学工程
- 计算力学 计算力学 计算力学
- 医疗器械开发 医疗器械开发
背景情况:
- 从外部压缩中模拟组织变形和改变血流通常需要计算密集的流体结构相互作用 (FSI) 分析.
- 现有的方法对动态外部压力模拟提出了重大计算挑战.
研究的目的:
- 开发和介绍一个多忠实性FSI框架,用于在动态外部压力下有效模拟组织力学和血液动力学.
- 证明框架对压缩疗法和相关生物医学应用的适用性.
主要方法:
- 结合了1D可变形血流模型与流体结构相互作用 (FSI) 的3D考契运动方程.
- 验证了多忠度模型与简化和专题特定几何形状的完整FSI解决方案相对应.
- 应用框架来模拟间歇性气动压缩 (IPC).
主要成果:
- 多忠度FSI模型准确地复制了组织变形和血液动力学变化,流量和压力误差最小 (分别为<1%和<2%).
- 与全 3D FSI 相比,实现了显著的计算成本降低:9倍的圆柱形和46倍的主题特定几何形状.
- 在延长时间尺度上成功捕获了动态IPC行为.
结论:
- 开发的多忠实性FSI框架提供了一个高效准确的平台来模拟对外部压力的反应.
- 能够进行大规模的参数和优化研究,并有可能增强压缩疗法设备设计和生物医学建模.
- 支持医疗器械开发和临床研究中的更广泛应用.
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