Mechanics of drag reduction of an axisymmetric body of revolution with shallow dimples

In this article, the mechanics of drag reduction on an axisymmetric body revolution by shallow dimples is presented using high-fidelity Reynolds Stress Modeling based simulations. Experimental results evolution from published literature at different numbers are used to validate model predictions. The numerical predictions show good agreement with experimental results. It observed that reduced a maximum [Formula: see text] such shape modification (for depth diameter ratio and coverage text]). This arises due level turbulence, flow stabilization suppression separation in boundary layer body. From analysis turbulence states anisotopic invariant map (AIM) for case dimpled body, we reaches limit layers close surface There also misalignment between mean direction principal axis stress tensor, which reduction. dimple diameter(s/d) (a/A) varied evaluate its effect evolution. An empirical correlation coefficient developed polynomial regression terms parameters, example, s/d ratio, a/A shear stress.