Wake-galloping energy harvesting has been extensively developed to scavenge flow from vortex-induced oscillations. Hence, the wake-galloping harvester only a natural frequency which leads very narrow bandwidth. Therefore, it does not operate well under wide region of shedding frequencies in variable wind speed. To overcome vital issue, this paper we explored novel two-degree-of-freedom nonlinea...

The lean blowout mechanisms of premixed bluff-body flames are experimentally investigated at various turbulence intensities. Turbulence levels varied using a novel generator, which combines static grid and fluidic jet impingement techniques. Three different probed to study their effects on blowout. three conditions span across the combustion regime diagram, from flamelets broken reactions. For ...

Two-dimensional direct numerical simulation (DNS) databases of bluff-body-stabilized lean hydrogen flames representative complicated reactive–diffusive system are analysed using the combined approach computational singular perturbation (CSP) and tangential stretching rate (TSR) to investigate chemical characteristics in blow-off dynamics. To assess diagnostic approaches flame dynamics, Damköhle...

The wake of a notchback Ahmed body presenting bi-stable nature is investigated by performing wind tunnel experiments and large-eddy simulations. Attention confined to the Reynolds number ( $Re$ ) influence on state instability within $5\times 10^{4}\leq Re \leq 25\times 10^{4}$ . Experimental observations suggest bi-stability with low-frequency switches under low becomes ‘tri-stable’ increase i...