On the Lagrangian-Eulerian Coupling in the Immersed Finite Element/Difference Method.

ABSTRACT: The immersed boundary (IB) method is a non-body conforming approach to fluid-structure interaction (FSI) that uses an Eulerian description of the momentum, viscosity, and incompressibility of a coupled fluid-structure system and a Lagrangian description of the deformations, stresses, and resultant forces of the immersed structure. Integral transforms with Dirac delta function kernels couple the Eulerian and Lagrangian variables, and in practice, discretizations of these integral transforms use regularized delta function kernels. Many different kernel functions have been proposed, but prior numerical work investigating the impact of the choice of kernel function on the accuracy of the methodology has often been limited to simplified test cases or Stokes flow conditions that may not reflect

SUBMITTER: Lee JH 

PROVIDER: S-EPMC8923617 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature