A novel interpolation-free sharp-interface immersed boundary method.

ABSTRACT: This paper describes a novel 2^nd order direct forcing immersed boundary method designed for simulation of 2D and 3D incompressible flow problems with complex immersed boundaries. In this formulation, each cell cut by the immersed boundary (IB) is reshaped to conform to the shape of the IB. IBs are modeled as a series of 2D planes in 3D space that connect seamlessly at the edges of the cut cells, in a way that mimics conformal grid. IBs are represented in a continuous and consistent fashion from one cell to another, thus eliminating spatial pressure oscillations originating from inconsistent description of the IB as well as the traditional stair-step problem, leading to a more accurate resolution of the boundary layer. Boundary conditions are enforced at the exact location of the

SUBMITTER: Kingora K 

PROVIDER: S-EPMC8896509 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature