Multiscale Modeling of Active Flow Control for Fuselage Drag Reduction

Multi-scale modeling of synthetic jet devices is em ployed to investigate the effect of active flow control (AFC) on fuselage drag reduction. The flow field in the vicinity of the synthetic jet devices was modeled using a Lattice Boltzmann equation (LBE) approach, while the external flow over the fuselage was modeled using a Reynolds-averaged Navier-Stokes (RANS) methodology. Computations with and without flow control also reported for flowfield around the isolated fuselage of ROBIN-mod7 model. The computed results, in the absence of flow control, have been compared with the measured data for ROBIN-mod7 model and show good agreement. Results from the CFD simulation with AFC using LB/NS coupled methodology indicate in an estimated 18% drag reduction.