NATO STO

The prediction of the Performance and Stability & Control or Maneuvering characteristics (S&C) is essential for the design and performance assessment of modern military vehicles in the air and maritime domains. Previous activities focused on the validation of Computational Fluid Dynamics (CFD) methods and their applicability during early and advanced design stages and showed consistent results compared to experiments in many operational conditions. However, much effort is needed to provide comprehensive high-fidelity CFD-based data sets, both for capturing the nonlinear flow regime and for evaluating dynamical motions of the vehicle. Thus, current numerical capabilities are inadequate for efficiently predicting the extensive amount of data. Here, Reduced Order Modelling (ROM) approaches seem to be capable in predicting these complex behaviors at affordable costs by using a low-dimensional approximation of the response based on a few highly accurate CFD simulations.