Modified near-wakes of axisymmetric cylinders with slanted base

Reynolds number and slant angle effects on the flow over a slanted cylinder afterbody

“…The PIV studies conducted by Bury et al (2013) showed the effect of the curved surfaces of the simplified Lockheed Martin C-130 tail on the flow field, as well as the effects of the opening of a cargo door on the vortex trajectory. A similar study of the effect of the cargo door has recently been published in the slanted cylinder configuration by Bulathsinghala, Wang & Gursul (2019), who also observed the persistence of the vortical pair in the open configuration, although with decreased strength and increased unsteadiness levels. The effect of geometrical curvature has also been characterized in other highly three-dimensional bluff body wakes such as the Ahmed body (Rossitto et al 2016(Rossitto et al , 2017, where the addition of fillets at the trailing edges of the model led to increased vortex dissipation and drag reduction.…”

Characterization of base bleed effects on subsonic trailing edge flows

“…The flow detachment at this area is the prime contributor to pressure losses, playing a fundamental role in the body's aerodynamic design. The afterbody of axisymmetric bodies [2,3,4], the aft part of ramjets or aircrafts [5], the rear flow of ground and flight vehicles [6,7], or the trailing edge of turbomachinery airfoils [8,9] are some applications where the base region flow drives the aerodynamic design process. During the initial aerodynamic optimization of turbomachinery passages, mono-dimensional tools anchored on correlations are used to explore a vast design space, key to develop novel configurations.…”