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. Author manuscript; available in PMC: 2010 May 1.

Published in final edited form as: J Magn Magn Mater. 2009 May 1;321(10):1446–1451. doi: 10.1016/j.jmmm.2009.02.065

Comparison of numerically determined retention ratios based on true velocity profiles with results based on cubic approximations to velocity profiles. a) Longitudinal retention ratio R_z, approximate result by eq (36); b) Angular retention ratio R_ω, approximate result by eq (42); c) Angular retention ratio R_ω, approximate result by eq (46). The curves of % errors refer to the right-hand axes. In all cases ρ_i = 0.5.

Comparison of numerically determined retention ratios based on true velocity profiles with results based on cubic approximations to velocity profiles. a) Longitudinal retention ratio R_z, approximate result by eq (36); b) Angular retention ratio R_ω, approximate result by eq (42); c) Angular retention ratio R_ω, approximate result by eq (46). The curves of % errors refer to the right-hand axes. In all cases ρ_i = 0.5.