CFD simulation and Grid study of Flying Wing Standard Model

Abstract In order to study the influence of mesh size variation on the numerical simulation of typical flying wing model, based on the verification and validation of NNW-FlowStar software, the numerical simulation of flying wing model with multiple sets of unstructured grids with succession variation in Ma=0.9 is carried out, and the lift coefficient, drag coefficient and pitching moment coefficient under corresponding conditions are obtained. Results show that as the height of the first layer decreases, lift coefficient is gradually approaching converged. When the height of the first layer reaches 0.04, the simulation error is already within 1%.