Comparison of turbulence modelling approaches in simulation of a feather shuttle; a porous conical bluff body

HART, John, POTTS, Jonathan and JAMES, David (2018). Comparison of turbulence modelling approaches in simulation of a feather shuttle; a porous conical bluff body. Sports Engineering, 21 (4), 465-478.

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The aerodynamics of a feather shuttlecock, a porous conical bluff body, are unique in comparison to other sports projectiles. Experimental wind tunnel studies have been published that present values of drag coefficient (Cd) for traditional feather shuttles that vary widely (0.48 < Cd < 0.74). It is difficult to compare published experimental data, due to a lack of clarity concerning experimental apparatus. All studies have used traditional sting mounts inserted aft of the shuttle base, and it is believed this has a strong influence on Cd, as significant air movement is known to occur in this region. Flow passes through gaps formed by individual feather shafts, or rachis, inserted into the shuttle base. The use of computational fluid dynamic (CFD) simulation in the analysis of shuttles has great potential as analysis can be performed without the need of an experimental sting. This study presents the first CFD simulations of a geometrically realistic feather shuttle. Careful consideration must be given to applied grids, numeric, and turbulence models (unsteady RANS vs scale resolving) if results obtained are to be reliable. CFD results present detailed insights of shuttle aerodynamics, and the significance of flow passage between the feather rachis and internal to the shuttle. The study raises significant concerns regarding the appropriateness of rear sting mounts in shuttle wind tunnel experiments.

Item Type: Article
Uncontrolled Keywords: 1106 Human Movement And Sports Science; 0913 Mechanical Engineering; 0906 Electrical And Electronic Engineering
Identification Number:
Page Range: 465-478
SWORD Depositor: Symplectic Elements
Depositing User: Symplectic Elements
Date Deposited: 27 Nov 2018 13:01
Last Modified: 18 Mar 2021 07:09

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