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

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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.