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

有限元法（FEM）被广泛应用于计算流体力学（CFD）的各个领域.然而，有限元法可能会受到限制的存在下，随时间变化的流体几何形状。处理大的变形需要特殊的程序，如重新划分网格，这可能会大大增加计算时间，并将额外的不准确性引入到解决方案中。所谓的格子玻尔兹曼方法（LBM）可以提供准确和稳定的模拟，即使是极端变形的几何形状。

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.