CFD Computational Fluid Dynamics (CFD) Francis turbine LES LHS Nusselt number PSO-MVFSA RANS Reynolds-averaged Navier-Stokes (RANS) Reynolds-averaged Navier-Stokes equations Sirocco fan Technology: general issues UAV URANS adiabatic film-cooling effectiveness aerodynamic aerodynamic performance artificial neural networks (ANN) axial compressor axial fan axial-flow pump blade outlet angle blowing ratio cascade cavitating flow and instabilities cavitation performance cell-set model centrifugal fan centrifugal pump characteristic implicit method