Efect of orientation on drag characteristics of a cone settling in Power-Law fluids

Abstract

The momentum transfer characteristics of a cone translating in power-law fiuids in two difierent orientations (apex downward and apex upward) with reference to the direction of the mean fiow is numerically investigated over wide ranges of conditions: Reynolds number, 1-Re-100; power-law index, 0.4-n-1.8; and cone angle, 20°150°. The governing dierential equations (continuity and momentum) are solved numerically. The numerical solution obtained is then postprocessed to infer the efiect of orientation for a given cone angle on the wake and drag phenomena. Finally, the present values of the drag coeficient for each orientation are used to develop predictive correlations in terms of Re, n, and a.