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首页> 外文期刊>Communications in Numerical Methods in Engineering >Computational modeling of the fluid flow and the flexible intimal flap in type B aortic dissection via a monolithic arbitrary Lagrangian/Eulerian fluid-structure interaction model
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Computational modeling of the fluid flow and the flexible intimal flap in type B aortic dissection via a monolithic arbitrary Lagrangian/Eulerian fluid-structure interaction model

机译：通过整体式任意拉格朗日/欧拉流固耦合模型对B型主动脉夹层中的流体流动和柔性内膜瓣进行计算建模

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In the present work, we perform numerical simulations of the fluid flow in type B aortic dissection (AD), accounting for the flexibility of the intimal flap. The interaction of the flow with the intimal flap is modeled using a monolithic arbitrary Lagrangian/Eulerian fluid-structure interaction model. The model relies on choosing velocity as the kinematic variable in both domains (fluid and solid) facilitating the coupling. The fluid flow velocity and pressure evolution at different locations is studied and compared against the experimental evidence and the formerly published numerical simulation results. Several tear configurations are analyzed. Details of the fluid flow in the vicinity of the tears are highlighted. Influence of the tear size upon the fluid flow and the flap deformation is discussed.
机译：在目前的工作中，我们对B型主动脉夹层（AD）中的流体流动进行了数值模拟，考虑了内膜瓣的柔性。使用整体式任意拉格朗日/欧拉流体-结构相互作用模型对流动与内膜瓣的相互作用进行建模。该模型依靠在两个域（流体和固体）中选择速度作为运动学变量来促进耦合。研究了不同位置的流体流速和压力演化，并与实验证据和先前发表的数值模拟结果进行了比较。分析了几种撕裂结构。泪液附近的流体流动的细节突出显示。讨论了撕裂尺寸对流体流动和襟翼变形的影响。

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