A Cartesian Immersed Boundary Method Based on 1D Flow Reconstructions for High-Fidelity Simulations of Incompressible Turbulent Flows Around Moving Objects

Abstract The aim of the present numerical study is to show that recently developed Alternating Direction Reconstruction Immersed Boundary Method (ADR-IBM) (Giannenas and Laizet in Appl Math Model 99:606–627, 2021) can be used for Fluid–Structure Interaction (FSI) problems combined with an Actuator Line (ALM) a Computer-Aided Design (CAD) interface high-fidelity simulations fluid flow rotors geometrically complex immersed objects. method relies on 1D cubic spline interpolations reconstruct artificial field inside object while imposing appropriate boundary conditions boundaries object. new capabilities are demonstrated following configurations: turbulent channel wall modelled as boundary, Vortex Induced Vibrations (VIVs) one-degree-of-freedom (2D) two-degree-of-freedom (3D) cylinders, helicopter rotor multi-rotor unmanned aerial vehicle hover forward motion. These performed high-order solver which based 2D domain decomposition order exploit modern CPU-based supercomputers. It shown ADR-IBM FSI incompressible flows around moving objects rotors.