GPU implementation of lattice Boltzmann method for time-resolved three-dimensional flow with complex and moving boundary: in-vitro and in-vivo experimental validation

背景：有限元方法广泛应用于计算流体力学的多个领域。然而，有限元在存在依赖于时间的流体几何结构时可能受到限制。处理大变形需要特殊的程序，如重新划分网格，这可能会显著增加计算时间，并在解中引入额外的不精确度。所谓的格子Boltzmann方法(LBM)可以提供精确和稳定的模拟，即使在极易变形的几何形状下也是如此。

Context: Finite element method (FEM) is widely applied to manifold areas of computational fluid dynamics (CFD). FEM, however, may be limited in the presence of time-dependent fluid geometries. Dealing with large deformations requires particular procedures like remeshing that may increase computation time considerably and introduce additional inaccuracy into the solution. The so-called Lattice Boltzmann method (LBM) can provide accurate and stable simulations even with extremely deformable geometries.