Assessment of turbulence models and mesh types for the simulation of multi-body separation by coupling the CFD and rigid body dynamics

Abstract Turbulence models are considered one of the most important sources numerical errors in CFD studies on different aeronautical problems. The mesh type can also affect accuracy and computational efficiency. In this paper, various simulations store separation from an aircraft model transonic flow have been carried out by coupling rigid body dynamics overset mesh. influence S-A model, Standard k-epsilon SST k-omega inviscid simulation results is examined. Different types both unstructured structured as component part considered. Grid-independence study first out. effects turbulence then examined comparing trajectories, velocities Eulerian angles. Recommendations given to get better for multi-body problem.